Questions

Q:

The electrochemical cell stops working after some time because ________

A) Electrode potential of both the electrodes becomes zero B) One of electrodes completely vanishes
C) Electrode potential of both electrodes equalizes D) The reaction reverses its direction
 
Answer & Explanation Answer: C) Electrode potential of both electrodes equalizes

Explanation:
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Q:

Temporary hardness is due to the presence of 

A) Calcium carbonate B) calcium bicarbonate
C) magnesium sulphate D) calcium sulphate
 
Answer & Explanation Answer: B) calcium bicarbonate

Explanation:

Temporary hardness is due to the presence of soluble bicarbonates of calcium and magnesium in water. Permanent hardness is due to the presence of sulphates and chlorides of calcium and magnesium.

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41 16207
Q:

Rearrange the parts of the sentence in correct order.

Seven decades ago,
P-Orwell wrote a clutch
Q-for the post-World War II British journal Polemic
R-of essays

A) RPQ B) QRP
C) PRQ D) QPR
 
Answer & Explanation Answer: C) PRQ

Explanation:
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Q:

The filament of a light bulb is made up of

 

A) Platinum B) Tantalum
C) Tungsten D) Antimony
 
Answer & Explanation Answer: C) Tungsten

Explanation:
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Q:

Who is the custodian of indian constitution?

A) Supreme Court B) Cabinet Ministers
C) President D) Parliament
 
Answer & Explanation Answer: A) Supreme Court

Explanation:

The president is the nominal custodian of the Indian constitution but the ideal custodian is the supreme court of India.

Who_is_the_custodian_of_indian_constitution1557491256.jpg image

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25 16200
Q:

The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 dm3 at 27°C is to a volume of 100 dm3

 

A) 42.3 J/ mole / K B) 38.3 J/ mole / K
C) 35.8 J/ mole / K D) 32.3 J/ mole / K
 
Answer & Explanation Answer: B) 38.3 J/ mole / K

Explanation:

s=nRlnv2v1 

=2.303 nR logv2v1 = 2.303×2×8.314×log10010 = 38.3 J mol-1k-1

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Q:

Rearrange the parts of the sentence in correct order:

Thus,

P-a developing economy also needs
Q-to have some notion of external balance
R-at the very least,

A) RPQ B) RQP
C) PQR D) QPR
 
Answer & Explanation Answer: A) RPQ

Explanation:
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Q:

Improve the bracketed part of the sentence.

You are what you (have eaten).

A) will eat B) eat
C) shall eat D) no improvement
 
Answer & Explanation Answer: B) eat

Explanation:
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