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GK Chapterwise – CDS Previous Year Papers

Table of Contents

81. Which one among the following plants cannot be multiplied by cuttings?

(a)Rose
(b) Bryophyllum
(c) Banana
(d) Marigold
Ans: (c)
CDS Exam (II) 2017

82. The vitamin(s), which is/are generally excreted in urine, is/ are

(a)viamin-A
(b) vitamin-B
(c) viamin-E
(d) vitamin-D and K
Ans: (b)

CDS (II) 2015

83. Which one among the following is a major source of sugar?

(a)Watermelon
(b) Beetroot
(c) Sugarcane
(d) Date
Ans: (c)

CDS (I) 2019

84. Itching due to insect bite is caused by

(a)formic acid
(b) acetic acid
(c) lactic acid
(d) maleic acid
Ans: (a)
CDS Exam (I) 2012

85. If excess fertilizer is applied to a plant without water, the plant will

(a)be stunted in growth
(b) develop modifications
(c) die due to plasmolysis
(d) remain unaffected
Ans: (c)

CDS (I) 2007

86. Chemically silk fibres are predominantly

(a)Protein
(b) Carbohydrate
(c) Complex lipid
(d) Mixture of polysaccharide and fat
Ans: (a)

CDS (II) 2009

87. Which one of the following plants is used for green manuring in India?

(a)Wheat
(b) Sunnhemp
(c) Cotton
(d) Rice
Ans: (b)

CDS (I) 2018

88. Which among the following are the major reasons behind preferring eucalyptus tree in the planned forestation process?
1. Plantation grows very fast.
2. Plantation makes the soil more fertile.
3. Wood from eucalyptus tree is easily converted into the pulp for paper industry.
Select the correct answer using the codes given below.

(a)1 and 2
(b) 1 and 3
(c) 2 and 3
(d) All of these
Ans: (b)
CDS Exam (I) 2016

89. Consider the following statements
1. Iodine is necessary for the thyroid gland to make adrenaline.
2. Iodine deficiency leads to goitre in human beings.
3. Iodine is secreted by pancreas and helps in regulating cholesterol level.
Which of the statements given above is/are correct?

(a)1, 2 and 3
(b) 1 and 2
(c) 1 and 3
(d) Only 2
Ans: (d)

CDS (I) 2008

90. Consider the following statements
1. A person with myopia can see distant objects distinctly but cannot see nearby objects clearly.
2. A person with hypermetropia cannot see distant objects clearly.
3. A person with presbyopia can see nearby objects without corrective glasses.
Which of the statements given above is/are not correct?

(a)1, 2 and 3
(b) 1 and 2
(c) 1 and 3
(d) Only 3
Ans: (a)

CDS (II) 2010

91. What is the most conspicuous salient feature of people with ‘Progeria’?

(a)More hair on body
(b) Less immunity to opportunistic infections
(c) Faster rate of ageing
(d) Surfer from infertility
Ans: (c)

CDS (I) 2015

92. A deficiency of which one of the following minerals is most likely to lead to an immunodeficiency?

(a)Calcium
(b) Zinc
(c) Lead
(d) Copper
Ans: (a)
CDS Exam (I) 2011

93. Consider the following statements
1. Warm-blooded animals can remain active in cold environment in which cold-blooded animals can hardly move.
2. Cold-blooded animals require much less energy to survive than warm-blooded animals.
Which of the statements given above is/are correct?

(a)Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (c)

CDS (I) 2013

94. Mosquito can be a vector for the following disease except

(a)yellow fever
(b) dengue fever
(c) filariasis
(d) kala-azar
Ans: (d)

CDS (II) 2017

95. Which among the following are the most important raw materials for the manufacturing of soap?

(a)Fats and caustic alkali
(b) Fats and potash
(c) Fats and acid
(d) Vegetable oil and potash
Ans: (a)
CDS Exam (II) 2015

96. Cattle are capable of digesting cellulose present in the grass and/or fodder that they eat. This ability is attributed to the

(a)presence of cellulose degrading bacteria in the rumen
(b) production of cellulose by the cattle rumen
(c) acids present in the rumen
(d) prolonged retention of cellulose in the rumen
Ans: (a)
CDS Exam (I) 2019

97. Why are pregnant women recommended substantial intake of green leafy vegetables in their diet, especially in the 1st trimester?

(a)They are a rich source of chlorophyll
(b) They are a rich source of lecithin
(c) They are a rich source of folic acid which is required for DNA synthesis
(d) They are a rich source of essential fatty acids required for cell anabolism
Ans: (c)

CDS (I) 2012

98. Which among the following statement about biofertilizers are correct?
1. Azotobacter is one of the nitrogen fixing bacteria used as a biofertilizer.
2. They have to be applied to the leaves of the plant only.
3. They alter the chemical composition of the soil.
4. They can be used along with organic fertilizers.
Select the correct answer using the code given below

(a)1 and 4
(b) 1, 2 and 4
(c) 2 and 3
(d) 1, 2, 3 and 4
Ans: (a)

CDS (II) 2007

99. Which of the following statements correctly describe the properties of hormones?
1. They are steroids, proteins, peptides or amino acids derivatives.
2. They are not produced by body organs and are mostly taken as supplements.
3. They do not influence the working of those organs which have secreted them.
4. They act as co-enzymes and help enzymes to perform their function.
Select the correct answer using the code given below

(a)1 and 4
(b) 2, 3 and 4
(c) 1 and 3
(d) 1. 2, 3 and 4
Ans: (a)
CDS Exam (II) 2009

100. Human body’s main organ of balance is located in

(a)inner part of ear
(b) middle part of ear
(c) front part of brain
(d) top part of vertebral column
Ans: (a)

CDS (II) 2018

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