Q:

Smallest gulf in the world is

A) Gulf of Mexico	B) Persian Gulf
C) Gulf of Oman	D) Gulf of California

Answer & Explanation Answer: D) Gulf of California

Explanation:

A gulf in geography is a large bay that is an arm of an ocean or sea.

The second smallest sea on Earth is the Sea of Cortez, more commonly called the Gulf of California. This sea is about 62,000 square miles. It lies between Mexico and the Baja California Peninsula.

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27 16229

Q:

Which of the following is a storage device?

A) Floppy discs	B) hard disk drive
C) Optical disc	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

Which_of_the_following_is_a_storage_device1554210303.jpg image

All of the above given options are storage devices.

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37 16222

Q:

Rearrange the parts of the sentence in correct order.

In order to tone up

P : it should be

Q : the physical education programme,

R : reoriented and implemented

A) PQR	B) PRQ
C) RQP	D) QPR

Answer & Explanation Answer: D) QPR

Explanation:

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0 16206

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 16202

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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92 16201

Q:

The entropy change involved in the isothermal reversible expansion of 2 moles of an ideal gas from a volume of 10 $d m^{3}$ at 27°C is to a volume of 100 $d m^{3}$

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:

$∆ s = n R \ln \frac{v 2}{v 1}$

$= 2.303 n R \log \frac{v 2}{v 1}$ = $2.303 \times 2 \times 8.314 \times \log (\frac{100}{10})$ = $38.3 J$ $m o l^{- 1}$ $k^{- 1}$

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43 16192

Q:

Rearrange the parts of the sentence in correct order.

For India, therefore,

P-a priority along with nuclear safety
Q-nuclear security is not a new objective,
R-but has always been

A) RQP	B) RPQ
C) PRQ	D) QRP

Answer & Explanation Answer: D) QRP

Explanation:

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0 16192

Q:

Improve the given sentence if necessary.

Unless you are not very careful, you will run into debt.

A) are very	B) will be very
C) may be	D) No improvement

Answer & Explanation Answer: A) are very

Explanation:

‘Unless’ is used to denote the condition i.e. ‘If’...... ‘Not’. So, again the use of negative word ‘not’ is superfluous. So, the phrase, ‘are not very’ needs to be replaced with ‘are very’ to make the sentence grammatically correct. Thus, the correct formation would be, ‘Unless, you are very careful, you will run into debt’.

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