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 16500

Q:

Which of the statements given below are correct?

A) United Arab Emirates hosted the Badminton 2017 BWF World Senior Championships.

B) Johanna Konta won the Tennis 2017 Miami Open Women's Singles.

C) Grigor Dimitrov won the Tennis 2017 US Open Men's Singles.

A) Only B	B) Only C
C) B and C	D) A, B and C

Answer & Explanation Answer: A) Only B

Explanation:

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Filed Under: Sports
Exam Prep: Bank Exams

0 16480

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 16454

Q:

Oval stadium in England is associated with

A) polo	B) Cricket
C) Hockey	D) Football

Answer & Explanation Answer: B) Cricket

Explanation:

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Filed Under: Sports

61 16447

Q:

The year 1995 is the golden Jubilee year of which of the following International Organisations

A) GATT	B) NAM
C) UNO	D) ASEAN

Answer & Explanation Answer: C) UNO

Explanation:

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Filed Under: World Organisations

52 16427

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 16381

Q:

Generally unemployment in a developing country takes place because of ___________.

A) lack of complementary factors of production	B) seasonal factors
C) lack of effective demand	D) switch over from one job to another

Answer & Explanation Answer: A) lack of complementary factors of production

Explanation:

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Filed Under: Indian Economy
Exam Prep: Bank Exams

1 16366

Q:

_______ converts and executes one statement at a time

A) compiler	B) interpreter
C) converter	D) instructions

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