Kerala PSC Secretariat Assistant Questions and answers

Secretariat Assistant Questions and answers

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1. Which metal has the least resistance?

A. Tungsten

B. Iron

C. Copper

D. Silver

Ans : D. Silver

2. The impurities contained in ore is known as:

A. Flux

B. Gangue

C. Alloy

D. Isotope

Ans : B. Gangue

3. The most abundant gas in the atmosphere of mars:

A. CO2

B. Methane

C. Nitrogen

D. Oxygen

Ans : A. CO2

4. Which gas is used for welding?

A. Argon

B. Radon

C. Acetylene

D. Krypton

Ans : C. Acetylene

5. Nitrating mixture contains sulphuric acid and ..........

A. Nitric acid

B. Formic acid

C. Tannic acid

D. Citric acid

Ans : A. Nitric acid

6. Pitchblende is the ore of:

A. Titanium

B. Tantallum

C. Lead

D. Uranium

Ans : D. Uranium

7. The gas used in cigarette lighters:

A. Propane

B. Butane

C. Hexane

D. Octane

Ans : B. Butane

8. The pH value of blood:

A. 7.4

B. 7

C. 6.5

D. 6

Ans : A. 7.4

9. The acid that cannot be kept in glass bottles:

A. Hydrocyanic acid

B. Hydrochloric acid

C. Hydrofluoric acid

D. Sulphuric acid

Ans : C. Hydrofluoric acid

10. The year of Chernobyl disaster ?

A. 1979

B. 1986

C. 1989

D. 1984

Ans : B. 1986

11. The chemical procedure for determining the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down orgamatic material present in a given water sample at certain temprature over a specific time period is termed:

A. Biological oxygen demand

B. Chemical oxygen demand

C. Eutrophication

D. None of these

Ans : A. Biological oxygen demand

12. Nuclear winter will ........... earth's temprature:

A. Increase

B. Decrease

C. Not affect

D. None of these

Ans : B. Decrease

13. The gas emitted by plants during day time:

A. Nitrogen

B. Hydrogen

C. CO2

D. Oxygen

Ans : D. Oxygen

14. The cheapest industrial acid:

A. Formic acid

B. Lactic acid

C. Nitric acid

D. Sulphuric acid

Ans : D. Sulphuric acid

15. The first to extract kerosene from petroleum:

A. Abrahm Gesner

B. Rudolf Diesel

C. Karl Benz

D. Kekle

Ans : A. Abrahm Gesner

16. Kamerling onnes invented ...............

A. Submarine

B. Skyscraper

C. Radar

D. Super conductivity

Ans : D. Super conductivity

17. Einstein got Nobel prize in connection with :

A. Special theory of relativity

B. Photo electric effect

C. General theory of relativity

D. None of these

Ans : B. Photo electric effect

18. The author of 'Journey to the center of the Earth' :

A. Arthur Conal Doyle

B. Joules Verne

C. Aldous Huxley

D. Arthur C. Clarke

Ans : B. Joules Verne

19. Rendezvous with Rama' was written by:

A. Arthur C. clarke

B. Stephen Hawcking

C. Joules Verne

D. Carl Sagan

Ans : A. Arthur C. clarke

20. Bosons are named after:

A. J.C Bose

B. S.C Bose

C. Sathyendranath Bose

D. None of these

Ans : C. Sathyendranath Bose

21. Which is the lightest metal?

A. Calcium

B. Barium

C. Lithium

D. Sodium

Ans : C. Lithium

22. The instrument which converts sound to electronic signal is
A. Loud Speaker
B. Stethoscope
C. Megaphone
D. Microphone
Ans : D. Microphone

23. The non-metal which is in liquid state at atmospheric temperature.
A. Bromine
B. Mercury
C. Galium
D. Cesium
Ans : A. Bromine

24. Which of the following instruments is used for measuring atmospheric pressure?
A. Thermometer
B. Barometer
C. Sonometer
D. Spectrometer
Ans : B. Barometer

25. The nitrogen base which is not present in DNA is ................
A. Adenine
B. Thymine
C. Guanine
D. Uracil
Ans : D. Uracil

26. The part of brain which help the body balance.
A. Cerebrum
B. Cerebellum
C. Thalamus
D. Medulla oblongata
Ans : B. Cerebellum

27. "Calcium hydroxide" is the chemical name of ................
A. Caustic soda
B. Caustic potash
C. Milk of lime
D. Milk of magnesia
Ans : C. Milk of lime

28. Iodine is used to detect which of the following constituents of food?
A. Starch
B. Glucose
C. Fats
D. Protein
Ans : A. Starch

29. Who is discovered Penicillin in 1928?
A. Edward Jenner
B. Alexander Fleming
C. Gregor Mendel
D. Louis Pasteur
Ans : B. Alexander Fleming

30. The scientist who formulated the “Germ theory of disease” is:
A. Louis Pasteur
B. Lamarck
C. Hugo Denies
D. Griger Mandel
Ans : A. Louis Pasteur

31.Which is the relay center in our brain?
A. Pituitary gland
B. Thalamus
C. Spinal cord
D. Meninges
Ans : B. Thalamus

32. Methane gas is invented by the scientist:
A. Alexandro Volta
B. Alexander Fleming
C. John Dalton
D. Thomas Alwa Edison
Ans : A. Alexandro Volta
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Kerala PSC Secretariat Assistant Questions and answers