GK in English

GK Chapterwise – CDS Previous Year Papers

Table of Contents

121. Cutting and peeling of onions brings tears to the eyes because of the presence of

(a)sulphur in the cell
(b) carbon in the cell
(c) fat in the cell
(d) amino acid in the cell
Ans: (a)

CDS (I) 2015

122. The anti-malarial drug quinine is made from a plant. The plant is

(b) eucalyptus
(c) cinnamon
(d) cinchona
Ans: (d)
CDS Exam (I) 2019

123. Endosulfan, which has been in news these days, is

(a)a pesticide
(b) a fertiliser
(c) a sulpha drug
(d) an antibiotic
Ans: (a)

CDS (I) 2012

124. Development of goitre (enlarged thyroid gland) is mainly due to deficiency of

(b) iodine
(c) calcium
(d) iron
Ans: (b)

CDS (II) 2007

125. To suspect HIV/AIDS in a young individual, which one among the following symptoms is mostly associated with?

(a)Long standing jaundice and chronic liver disease
(b) Severe anaemia
(c) Chronic diarrhoea
(d) Severe persistent headache
Ans: (d)
CDS Exam (II) 2009

126. Which one among the following statements is correct?

(a)All proteins are enzymes
(b) All enzymes are proteins
(c) None of the enzymes is protein
(d) None of the proteins is enzyme
Ans: (b)
CDS Exam (I) 2018

127. The ultimate cause of water movement in a plant stem against gravity is

(b) transpiration
(c) photosynthesis
(d) diffusion
Ans: (b)

CDS (I) 2016

128. Which one among the following will be absorbed fastest through the wall of digestive system?

(a)Black coffee as a hot beverage
(b) DDT taken as a poison
(c) Raw alcohol taken as a drink
(d) Ice-cream as a dessert
Ans: (c)

CDS (II) 2008

129. It has been observed that astronauts lose substantial quantity of calcium through urine during space flight. This is due to

(a)hyper gravity
(b) microgravtty
(c) intake of dehydrated food tablet
(d) low temperature ip cosmos
Ans: (b)
CDS Exam (II) 2010

130. If we sprinkle common salt on an Earthworm, it dies due to

(a)osmotic shock
(b) respiratory failure
(c) toxic effect of salt
(d) closure of pores of skin
Ans: (a)

CDS (II) 2015

131. Consider the following statements regarding antibiotics
1. They are used to destroy disease-causing bacteria.
2. They can be applied to the skin, swallowed or injected to fight micro-organisms inside the body.
3. They are effective against disease-causing viruses.
4. The first antibiotic to be discovered was Tetracycline.
Which of the statement(s) given above is/are correct?

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

CDS (I) 2011

132. The crew and passengers of a flying aircraft suffer generally from chronic obstructive pulmonary disease due to the effect of

(a)solar radiation
(b) ozone concentration
(c) nitrogen oxide
(d) particulate pollutant
Ans: (c)

CDS (II) 2013

133. The pH of human blood is normally around

(b) 5.5-6.5
(c) 7.5-8.0
(d) 8.5-9.0
Ans: (c)
CDS Exam (II) 2017

134. Which one among the following vitamins is necessary for blood clotting?

(a)Vitamin A
(b) Vitamin D
(c) Vitamin K
(d) Vitamin C
Ans: (c)

CDS (II) 2015

135. The fossil of Archaeopteryx represents the evidence of origin of

(a)birds from reptiles
(b) mammals from reptiles
(c) reptiles from amphibians
(d) mammals from birds
Ans: (a)

CDS (I) 2019

136. Human blood is a viscous fluid. This viscosity is due to

(a)proteins in blood
(b) platelets in plasma
(c) sodium in serum
(d) RBC and WBC in blood
Ans: (a)

CDS (II) 2012

137. Cancer is more common in older people because

(a)their immune systems have degenerated
(b) the supply of certain hormones declines with age
(c) their bodies are unable to adjust to the changing environment
(d) they have accumulated more mutations
Ans: (d)
CDS Exam (II) 2007

138. What would happen if human blood becomes acidic (low pH)?

(a)Oxygen carrying capacity of haemoglobin is increased
(b) Oxygen carrying capacity of haemoglobin is decreased
(c) RBC count increases
(d) RBC count decreases
Ans: (b)

CDS (II) 2009

139. Which one among the following statements about blood transfusion is correct? Blood group B can give blood to

(a)blood Group B and receive from Group AB
(b) blood Groups B and AB and receive from Group B
(c) blood Groups B and AB and receive from Group A
(d) blood Group O and receive from Group B
Ans: (b)

CDS (I) 2018

140. The gastrointestinal hormones namely secretin and cholecystokinin secreted by duodenal epithelium activate respectively which organs to discharge their secretions?

(a)Pancreas and gall bladder
(b) Gall bladder and stomach
(c) Pancreas and stomach
(d) Stomach and small intestine
Ans: (a)
CDS Exam (I) 2016

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