GK in English

GK Chapterwise – CDS Previous Year Papers

Table of Contents

201. Which of the following cells do not contain nucleus?
1. Root hair cells 2. Red blood cells
3. Platelets 4. Monocytes Select the correct answer using the code given below.

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

CDS (II) 2007

202. Which one of the following hormones is essential for the uptake of glucose by cells in the human body?

(b) TSH
(c) Insulin
(d) Cortisol
Ans: (c)

CDS (I) 2009

203. Which one of the following statements is not correct?

(a)The response of the ear to sound of increasing intensity is approximately logarithmic.
(b) The sensitivity of the human ear does not vary with the frequency of the sound.
(c) When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave.
(d) Longitudinal waves can travel in all media-solids, liquids and gases.
Ans: (b)
CDS Exam (I) 2018

204. Deficiency of fluoride leads to which one of the following health problems?

(a)Tooth caries
(b) Mottling of tooth
(c) Bending of bones
(d) Stiffening of joints
Ans: (a)

CDS (I) 2016

205. In human body, the cell growth and differentiation are highly controlled and regulated, but in cancer cells

(a)there is breakdown of these regulatory mechanisms leading to formation of benign and malignant tumors
(b) controlled cell division and over- production of genetic material occur
(c) RNA is mutated and produced in less amount
(d) DNA is mutated and produced in less amount
Ans: (a)

CDS (II) 2008

206. The process of copying genetic information from one strand of DNA into RNA is termed as

(b) transcription
(c) replication
(d) mutation
Ans: (b)

CDS (I) 2010

207. Polynucleotide chain of DNA contains

(a)a nitrogenous base, deoxyribose sugar and phosphate group
(b) a nitrogenous base, ribose sugar and phosphate group
(c) deoxyribose sugar, ribose sugar and phosphate group
(d) a nitrogenous base and phosphate group only
Ans: (a)
CDS Exam (I) 2015

208. The elemental composition of an adult human body by mass is

(a)C > O > H > N
(b) O > C > H > N
(c) N > C > H > O
(d) N > C > O > H
CDS (I) 2011

209. ‘Altitude sickness’ is caused at high altitude due to

(a)high partial pressure of oxygen
(b) low partial pressure of oxygen
(c) low level of haemoglobin
(d) high partial pressure of carbon dioxide
Ans: (b)

CDS (II) 2013

210. The plant growth regulators are small, simple molecules of diverse chemical composition. They are

(a)carbohydrates, fats and proteins
(b) indole compounds, adenine derivatives, carotenoids and terpenes
(c) fatty acids, glucose and vitamins
(d) vitamin C, vitamin D and glucose
Ans: (b)

CDS (I) 2017

211. The mammalian heart is myogenic and it is regulated by nerves. The heartbeat originates from

(a)sinoatrial node
(b) QRS wave
(c) T wave
(d) hepatic portal system
Ans: (a)
CDS Exam (I) 2015

212. Bleeding of gums, falling of teeth, fragile bones and delayed wound healing occur due to the deficiency of which one of the following vitamins?

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

CDS (I) 2019

213. Syngamy results in formation of

(a)haploid zygote
(b) diploid zygote
(c) non-motile male gametes
(d) motile male gametes
Ans: (b)

CDS (II) 2012

214. Most viruses that infect plants possess

(a)single-stranded DNA
(b) single-stranded RNA
(c) double-stranded DNA and RNA
(d) double-stranded RNA only
Ans: (b)
CDS Exam (II) 2007

215. A biological community in its environment such as a pond, an ocean, a forest, even an aquarium is known as

(b) community
(c) abiotic environment
(d) ecosystem
Ans: (a)
CDS Exam (I) 2009

216. Human insulin molecule is composed of one a-chain having 21 amino acids and one b-chain having 30 amino acids.
How many functional insulin genes occur in adult humans?

(b) Two
(c) Three
(d) Four
Ans: (a)

CDS (I) 2018

217. Match List-I with List-II and select the correct answer using the code given below the Lists: List-I List-II
(Cell Organelle) (Function)
A. Mitochondria 1. Photosynthesis
B. Chloroplast 2. Protein synthesis
C. Ribosomes 3. Intracellular digestion
D. Lysosomes 4. ATP formation Codes:

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

CDS (II) 2016

218. Blue Baby Syndrome is caused by the contamination of

(a)nitrite ( ) NO2-
(b) sulphite ( 2 ) SO3-
(c) nitrate ( ) NO3-
(d) sulphate ( ) 24 SO –
Ans: (c)
CDS Exam (II) 2008

219. Which one of the following proteins gives lustrous shiny appearance to silk fibre?

(b) Sericin
(c) Collagen
(d) Nectin
Ans: (a)

CDS (II) 2010

220. Which one of the following elements is essential for the formation of chlorophyll in green plants?

(b) Iron
(c) Magnesium
(d) Potassium
Ans: (c)

CDS (I) 2015

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