GK in English

GK Chapterwise – CDS Previous Year Papers

Table of Contents

181. Which one of the following elements will be an isobar of calcium if the atomic number of calcium is 20 and its mass number is 40?

(a)Element with 20 protons and 18 neutrons
(b) Element with 18 protons and 19 neutrons
(c) Element with 20 protons and 19 neutrons
(d) Element with 18 protons and 22 neutrons
Ans: (d)

CDS (I) 2018

182. Which of the following substances cause temporary hardness in water?
1. Mg (HCO3)2 2. Ca (HCO3)2
3. CaCl2 4. MgSO4 Select the correct answer using the code given below.

(a)3 and 4
(b) 2 and 3
(c) 1 and 4
(d) 1 and 2
Ans: (d)
CDS Exam (I) 2016

183. Which one of the following is not a characteristic of a compound?

(a)Composition is variable.
(b) All particles of compound are of only one type.
(c) Particles of compound have two or more elements.
(d) Its constituents cannot be separated by simple physical methods.
Ans: (b)

CDS (I) 2008

184. Bright light is found to emit from photographer’s flashgun.
This brightness is due to the presence of which one of the following noble gases?

(a)Argon
(b) Xenon
(c) Neon
(d) Helium
Ans: (b)

CDS (II) 2010

Chapter 7 Biology

1. Consider the following Enzymes and protein can be correlated with each other in the following ways
1. All proteins are enzyme.
2. All enzymes are protein.
3. All enzymes are not protein.
4. All proteins are not enzyme.
Which of the above are correct?
(a)1 and 3
(b) 2 and 4
(c) 1, 2 and 3
(d) 2, 3 and 4
Ans: (b)

CDS (II) 2015

2. What does water gas comprise of?

(a)Carbon monoxide and hydrogen
(b) Carbon dioxide and hvdrogen
(c) Carbon monoxide and methane
(d) Carbon dioxide and methane
Ans: (a)

CDS (I) 2011

3. What does sphygmomanometer measure?

(a)Blood pressure
(b) Velocity of fluids
(c) Temperature
(d) Curvature of spherical surfaces
Ans: (a)
CDS Exam (I) 2013

4. A mother of blood group O has a group O child. What could be the blood group of father of the child?

(a)Only O
(b) A or B or O
(c) A or B
(d) Only AB
Ans: (b)

CDS (I) 2017

5. Which one of the following is not a constituent of biogas?

(a)Methane
(b) Carbon dioxide
(c) Hydrogen
(d) Nitrogen dioxide
Ans: (d)

CDS (II) 2015

6. Consider the following statements in respect of thyroid gland.
1. It is situated in the neck.
2. It is vital to maintain of normal body temperature.
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 Exam (II) 2019

7. Which of the following diseases are preventable by vaccine?
1. Tetanus 2. Polio
3. Leprosy 4. Pertusis Select the correct answer using the code given below

(a)1 and 3
(b) 2 and 4
(c) 1, 2 and 4
(d) All of these
Ans: (b)
CDS Exam (I) 2012

8. Which one of the following glands in the human body stores iodine?

(a)Parathyroid
(b) Thyroid
(c) Pituitary
(d) Adrenal
Ans: (b)

CDS (I) 2007

9. Which one of the following vitamins helps in clotting of blood?

(a)Vitamin-A
(b) Vitamin-B6 (c) Vitamin-D
(d) Vitamin-K
Ans: (d)

CDS (II) 2009

10. Which one of the following vitamins is abundant in guava fruits?

(a)Vitamin-A
(b) Vitamin-B12 (c) Vitamin-C
(d) Vitamin-D
Ans: (c)
CDS Exam (II) 2018

11. Which one of the following causes the chikungunya disease?

(a)Bacteria
(b) Helminthic worm
(c) Protozoan
(d) Virus
Ans: (d)

CDS (II) 2016

12. Match the following Lis t I
(Dis eas e) Lis t II
(Part of Human Body Affected)
A. Conjunctivitis 1. Eyes
B. Dermatitis 2. Joints
C. Gout 3. Skin
D. Meningitis 4. Spinal cord Codes A B C D

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

CDS (I) 2008

13. Which of the following part of blood carry out the function of body defence?

(a)Red blood cells
(b) White blood cells
(c) Platelets
(d) Haemoglobins
Ans: (b)

CDS (II) 2010

14. Match the following lists. Lis t I
(Scientis t) Lis t II
(Work)
A. F G Banting 1. Vaccination for small pox
B. J Lis ter 2. Germ theory
C. Louis Pas teur 3. Us e of carbolic acid as an antis eptic
D. E Jenner 4. Discovery of insulin Codes A B C D

(a)4 3 2 1
(b) 4 2 1 3
(c) 3 4 2 1
(d) 1 4 3 2
Ans: (a)
CDS Exam (II) 2015

15. Which of the following is not a bird?

(a)Bat
(b) Emu
(c) Kiwi
(d) Ostrich
Ans: (a)

CDS (II) 2011

16. In the context of ecology and environment, what does the Red Data Book pertain to?

(a)Details of harmful levels of various pollutants
(b) A complete list of all endangered plants and animals
(c) A description of the consequences of nuclear holocaust
(d) A description of the sociological and psychological consequence of genetically modified plants and animals
Ans: (b)

CDS (I) 2013

17. In the human body, Cowper’s glands form a part of which one of the following system?

(a)Digestive system
(b) Endocrine system
(c) Reproductive system
(d) Nervous system
Ans: (c)

CDS (II) 2017

18. Which one of the following glands produces the growth hormone (somatotrophin)?

(a)Adrenal
(b) Pancreas
(c) Pituitary
(d) Thyroid
Ans: (c)
CDS Exam (II) 2015

19. Consider the following statements.
1. Cigarette smoking exposes a person to benzene.
2. Benzene is a known carcinogen.
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 (II) 2019

20. Which of the following gases is released from rice fields in the most prominent quantities?

(a)Carbon dioxide
(b) Methane
(c) Carbon monoxide
(d) Sulphur dioxide
Ans: (b)

CDS (I) 2012

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