Q:

For any two real numbers a and b.

$\sqrt{{(a - b)}^{2}} + \sqrt{{(b - a)}^{2}}$ is

A) always zero	B) never zero
C) positive only if a ≠ b	D) positive if an only if a > b

Answer & Explanation Answer: C) positive only if a ≠ b

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

1 16226

Q:

Improve the bracketed part of the sentence.

Perhaps a greater challenge they face is (improving the wounds of the civil war), Iraq is a divided country today.

A) counting the effects of the civil war	B) curing the aftermaths of the civil war
C) healing the wounds of the civil war	D) No improvement

Answer & Explanation Answer: C) healing the wounds of the civil war

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 16215

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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Filed Under: Chemistry

92 16208

Q:

Find the Missing Numbers in the given Number Puzzle ?

A) 169 & 81	B) 67 & 121
C) 64 & 115	D) 70 & 110

Answer & Explanation Answer: A) 169 & 81

Explanation:

Observe that in each column, square of sum of digits in the first row = Respective second row elements.

In the same way, square of sum of digits in the second row = Respective third row elements.

=> ${(6 + 4)}^{2} = 10^{2} = 100$

=> ${(4 + 9)}^{2} = 13^{2} = 169$

=> ${(8 + 1)}^{2} = 9^{2} = 81$ .

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Filed Under: Number Puzzles
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

82 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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Filed Under: Chemistry

41 16202

Q:

What bet can never be won?

Answer

ALPHABET is the bet can never be won.

Workspace

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Subject: Word Puzzles Exam Prep: AIEEE , Bank Exams , GRE , TOEFL
Job Role: Analyst , Bank Clerk , Bank PO

107 16199

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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Filed Under: Chemistry
Exam Prep: AIEEE

43 16194

Q:

Improve the bracketed part of the sentence.

The speed with which (these hate crime videos travelling) on social media frames a difficult challenge for law enforcement authorities.

A) these hate crime videos travel	B) this hate crime videos travel
C) these hate crime videos travelled	D) No improvement

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