Free tnpsc model questions Online Test - MeritNotes

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1. An ideal gas is one which obeys

(a) Avogadro’s law
(b) Boyle’s laws
(c) Charles law
(d) Gas laws

2. Source of vitamin C is

(a) Aaleic acid
(b) Oxalic acid
(c) Ascorbic acid
(d) Nitric acid

3. Vander Wall’s equation explains the behaviour of

(a) Diatomic gases
(b) Mixture of gases
(c) Ideal gases
(d) Real gases

4. The efficiency of a heat engine is maximum when

(a) Temperature difference of source and sink is maximum
(b) Temperature difference of source and sink is minimum
(c) Temperature of sink is greater than that of source
(d) Temperature of source is greater than that of sink

5. Tartaric acid is obtained from

(a) Apples
(b) Grapes
(c) Citrous fruit
(d) Tomato

6. Substance which alter the velocity of reaction themselves remaining chemically and quantitatively themselves remaining chemically and quantitatively unchanged after reaction are known as

(a) Adsorbates
(b) Catalysts
(c) Indicators
(d) Surfactants

7. Blue litmus paper is converted into red in solution of

(a) Alkali
(b) Acid
(c) Base
(d) Salt

8. Red litmus paper is changed into blue in solution of

(a) Acid
(b) Base
(c) Salt
(d) None of these

9. Which of the following is a radioactive element?

(a) Polonium
(b) Selenium
(c) Sulphur
(d) Tellurium

10. The difference between a nuclear reactor and atomic bomb is that

(a) No-chain reaction takes place in atomic bomb while it takes place in nuclear reactor
(b) The chain reaction in nuclear reactor is not controlled
(c) The chain reaction in nuclear reactor is controlled
(d) No chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction

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