Question Paper Name: Environmental Sciences 27th May 2019 Shift 1 SET 1
Subject Name: ENVIRONMENTAL SCIENCES
Creation Date: 2019-05-27 15:06:18
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Duration: 180
Total Marks: 100
Display Marks: Yes
Share Answer Key With Delivery Engine: Yes
Actual Answer Key: Yes
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Environmental Sciences
Group Number: 1
Group Id: 12820614
Group Maximum Duration: 0
Group Minimum Duration: 180
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Revisit allowed for view?: No
Revisit allowed for edit?: No
Break time: 0
Group Marks: 100
PART A
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Section Id: 12820
Section Number: 1
Section type: Online
Mandatory or Optional: Mandatory
Number of Questions: 40
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Number of Questions to be attempted: 40
Section Marks: 50
Display Number Panel: Yes
Group All Questions: No
Sub-Section Number: 1
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Sub-Section Id: 12820632
Question Shuffling Allowed: Yes
Question Number: 1 Question Id: 128206717 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
A experiment was conducted where you analyzed the results of the plant growth experiment after you manipulated the amount of water and seed variety. Which of the following is correct?
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- we randomized the plants to plots to eliminate any effect of hidden variables
- we could determine the best combination of water and seed variety by examining the difference in the plant height in the final week of the experiment
- the variability in growth among plants of the same variety who received the same amount of water was constant over time
- the growth of a particular plant in week 3 is likely to be independent (unrelated) of the growth of the same plant in week 2
Options:
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1282062833. A
1282062834. B
1282062835. C
1282062836. D
Question Number: 2 Question Id: 128206718 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
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Correct Marks: 1 Wrong Marks: 0
The concentration of end product of a reaction is quantified in a colorimeter. For a 1 cm path length cuvette, 20% of the incident light intensity is absorbed. If the path length is increased to 2 cm, the percentage of light transmitted is
- 36
- 64
- 56
- 95
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Options:
1282062837. A
1282062838. B
1282062839. C
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1282062840. D
Question Number: 3 Question Id: 128206719 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
A farmer growing a particular variety of grape plants in vineyard, observes the following:
P. Fruit size normally remained small.
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Q. Natural seed abortion.
R. Development of fungal infection as the pedicels are small in size due to which moisture is retained in the bunches of grapes.
Experts suggested spraying gibberellic acid during the fruit development. This treatment would help in getting rid of
- P, Q and R
- only P and Q
- only P and R
- only Q and R
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1282062842. B
1282062843. C
1282062844. D
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Question Number: 4 Question Id: 128206720 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Possible explanations for the age-related decline in primary productivity of trees are:
P. As trees grow larger with age, they have more tissues that respire and loose energy and proportionately less leaf area to photosynthesize.
Q. Nutrient limitation by nitrogen due to reduced rate of woody litter decomposition as forest ages.
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R. As trees become larger, water transport to the top canopy leaves becomes limited because of increased hydraulic resistance. This results in reduced stomatal conductance and reduction in photosynthetic rate.
Which of the above is/are correct?
- P, Q and R
- Only P
- Only P and R
- Only Q and R
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Options:
1282062845. A
1282062846. B
1282062847. C
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1282062848. D
Question Number: 5 Question Id: 128206721 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Demography is the science of
- Population
- Biotic interactions
- Abiotic interactions
- Both biotic and abiotic interactions
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Options:
1282062849. A
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1282062850. B
1282062851. C
1282062852. D
Question Number: 6 Question Id: 128206722 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
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deals with
- Silkworm
- Trees
- Sewage treatment
- Ornamental plants
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Options:
1282062853. A
1282062854. B
1282062855. C
1282062856. D
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Question Number: 7 Question Id: 128206723 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Soil type A is good and soil type B is bad for rice. This is an example of
- Nominal scale
- Ordinal scale
- Interval scale
- Both nominal and ordinal scale
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Options:
1282062857. A
1282062858. B
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1282062859. C
1282062860. D
Question Number: 8 Question Id: 128206724 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
For preparing 1 N solution of a substance, we need to know
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- Only its equivalent weight
- Only its Molecular weight
- Both equivalent weight and molecular weight.
- Its equivalent weight and also density of water
Options:
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1282062861. A
1282062862. B
1282062863. C
1282062864. D
Question Number: 9 Question Id: 128206725 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
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Correct Marks: 1 Wrong Marks: 0
ised while separating proteins by polyacrylamide gel electrophoresis because
- It helps in proteins solubilization
- It helps in providing uniform negative charge density during electrophoresis
- It helps in stabilization of proteins
- It decreases the surface tension of electrophoresis buffer
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Options:
1282062865. A
1282062866. B
1282062867. C
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1282062868. D
Question Number: 10 Question Id: 128206726 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
An abstract is a part of
- Research article
- Conference proceedings
- Thesis
- All of these
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Options:
1282062869. A
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1282062870. B
1282062871. C
1282062872. D
Question Number: 11 Question Id: 128206727 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
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ISBN relates to
- Books
- Research articles
- News magazine
- All of these
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Options:
1282062873. A
1282062874. B
1282062875. C
1282062876. D
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Question Number: 12 Question Id: 128206728 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
work on a principle in which molecules absorb light of
- Different wavelengths
- Constant wavelength
- Absorb at a given wavelength and then emit it at a longer wavelength
- Absorb at a given wavelength and then emit it at a shorter wavelength
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Options:
1282062877. A
1282062878. B
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1282062879. C
1282062880. D
Question Number: 13 Question Id: 128206729 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Which one is a plagiarism software?
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- Norton
- End Note
- Graph prism
- Turnitin
Options:
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1282062881. A
1282062882. B
1282062883. C
1282062884. D
Question Number: 14 Question Id: 128206730 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
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Correct Marks: 1 Wrong Marks: 0
Among these, which statement is correct?
- To minimize the standard deviation the sample size should be decreased
- To minimize the standard deviation the sample size should be increased
- Standard deviation will not depend on sample size
- Standard deviation will always be proportional to sample size
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Options:
1282062885. A
1282062886. B
1282062887. C
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1282062888. D
Question Number: 15 Question Id: 128206731 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Which of the following analytical instrument does not follow Beer-Lamberts law?
- Spectrophotometer
- Atomic absorption spectrometer (AAS)
- Inductively Coupled Plasma Optical emission spectrometer (IPC-OES)
- AAS coupled with VG assembly
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Options:
1282062889. A
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1282062890. B
1282062891. C
1282062892. D
Question Number: 16 Question Id: 128206732 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
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An analyst made following observations for Fe and Cu concentrations (in ppm units) in standard of soil
| Fe | Cu | |
|---|---|---|
| True value | 56 | 40 |
| Observation 1 | 60 | 40 |
| Observation 2 | 60 | 30 |
| Observation 3 | 60 | 50 |
Which of the following is NOT correct?
- Fe analysis have ~4% error
- Average Cu concentration is matching with true value
- Cu analysis showed high precision
- Fe analysis showed high precision
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Options:
1282062893. A
1282062894. B
1282062895. C
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1282062896. D
Question Number: 17 Question Id: 128206733 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Which of the following gases is not used in atomic absorption spectrometer?
- Air-acetylene
- Argon
- Nitrous oxide-air
- Nitrogen
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Options:
1282062897. A
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1282062898. B
1282062899. C
1282062900. D
Question Number: 18 Question Id: 128206734 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
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A sample must be representative in nature. Representative sample means:
- Sample similar to the population in all respects
- Replica of the population for some characteristics
- Sample which is smaller in size than population
- Sample whose concentrations are similar is population mean within sampling error limits
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Options:
1282062901. A
1282062902. B
1282062903. C
1282062904. D
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Question Number: 19 Question Id: 128206735 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
The soil sampling conducted by Pramod could include all types of soil samples in the given area will fixed boundaries in the equal proportion. The sampling technique is called as
- Convenience sampling technique
- Purposive sampling technique
- Probability sampling technique
- Pre-divided sampling technique
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Options:
1282062905. A
1282062906. B
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1282062907. C
1282062908. D
Question Number: 20 Question Id: 128206736 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
How to identify the chemical weathering process in the geological formation?
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- the splitting of a boulder
- the grinding of pebbles into sand
- the cleavage of a feldspar crystal
- the rusting of hornblende
Options:
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1282062909. A
1282062910. B
1282062911. C
1282062912. D
Question Number: 21 Question Id: 128206737 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
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Correct Marks: 1 Wrong Marks: 0
lysises fast and non-destructive elemental analysis with the capability to pinpoint individual particles with diameters down to
- AAS
- UV Spectrophotometer
- EDXRF
- Anodic Stripping Voltammetry
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Options:
1282062913. A
1282062914. B
1282062915. C
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1282062916. D
Question Number: 22 Question Id: 128206738 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Which dense liquid is used to separate zircon and rutile from quartz and feldspar in sediments?
- Methyline iodide
- Bromoform
- Lithium based tungstate
- Methyl chloride
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Options:
1282062917. A
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1282062918. B
1282062919. C
1282062920. D
Question Number: 23 Question Id: 128206739 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
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Which mineral is observed under microscope that has optical properties: colourless, non-pleochroic, prismatic, euheadral to subhedral grain with prominent crystalline face:
- quartz
- Magnetite
- Titanite
- Zircon
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Options:
1282062921. A
1282062922. B
1282062923. C
1282062924. D
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Question Number: 24 Question Id: 128206740 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Trilobites fossil used to determine the approximate age of ---- geological period
- Silurian
- Devonian
- Cambrian
- Jurassic
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Options:
1282062925. A
1282062926. B
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1282062927. C
1282062928. D
Question Number: 25 Question Id: 128206741 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Generally which size fraction of sediment/regolith is generally chosen for the sedimentary geochemical studies:
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- 37 micron
- 63 micron
- 47 micron
- 125 micron
Options:
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1282062929. A
1282062930. B
1282062931. C
1282062932. D
Question Number: 26 Question Id: 128206742 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
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Correct Marks: 1 Wrong Marks: 0
What is a research design?
- A method of conducting research that is not solved by theoretical calculation
- The choice between using qualitative or quantitative methods
- The method by which we present your research findings, e.g. a graph, a table
- An outline for every stage of the collection and analysis of data
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Options:
1282062933. A
1282062934. B
1282062935. C
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1282062936. D
Question Number: 27 Question Id: 128206743 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
median of the five terms listed below is 5, where b is a constant. What is the average (arithmetic mean) of the five terms
b - 3, b - 1, b + 2, b + 3, b + 4
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- 3
- 4
- 5
- 0
Options:
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1282062937. A
1282062938. B
1282062939. C
1282062940. D
Question Number: 28 Question Id: 128206744 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
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Correct Marks: 1 Wrong Marks: 0
The average (arithmetic mean) high temperature for X days is 70 degrees. The addition of one day with a high temperature of 75 degrees increases the average to 71 degrees. What is the value of X?
- 5
- 4
- 10
- 1
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Options:
1282062941. A
1282062942. B
1282062943. C
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1282062944. D
Question Number: 29 Question Id: 128206745 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
Which one of the followings is used in simple titration
- Litmus
- Conductivity meter
- Indicator
- Resin
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Options:
1282062945. A
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1282062946. B
1282062947. C
1282062948. D
Question Number: 30 Question Id: 128206746 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 1 Wrong Marks: 0
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d water can be identified by using following sensor
- Thermal
- Visible
- Microwave
- Ultraviolet
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Options:
1282062949. A
1282062950. B
1282062951. C
1282062952. D
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Sub-Section Number: 2
Sub-Section Id: 12820633
Question Shuffling Allowed: Yes
Question Number: 31 Question Id: 128206747 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 2 Wrong Marks: 0
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If ELR and DALR represent environmental lapse rate and dry adiabatic lapse rate, respectively, which of the following statement is correct?
- ELR>DALR indicates stable atmosphere.
- ELR=DALR indicates highly unstable atmosphere.
- ELR<DALR indicates unstable atmosphere.
- ELR>DALR indicates unstable atmosphere.
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Options:
1282062953. A
1282062954. B
1282062955. C
1282062956. D
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Question Number: 32 Question Id: 128206748 Question Type: MCQ Option Shuffling: No Display Question Number: Yes Single Line Question Option: No Option Orientation: Vertical
Correct Marks: 2 Wrong Marks: 0
Mathematically, the logistic curve for population growth is derived from differential equation, dN/dt = rN [1-(N/K)] where 'N' is population size, 'K' is
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