Q:

What is the gram formula mass of ${Li}_{2} {SO}_{4}$ ?

A) 101.2487	B) 109.9446
C) 111.2687	D) 106.5871

Answer & Explanation Answer: B) 109.9446

Explanation:

The term gram formula mass is synonymous with molecular mass. So, to get this, we must add molar mass of all the elements in this compound.

Given compound is Lithium Sulphate - ${Li}_{2} {SO}_{4}$

Elemental calculation ::

Li - Lithium - 6.941 - 2 - 13.88200 %
S - Sulfur - 32.065 - 1 - 32.065 %
O - Oxygen - 15.9994 - 4 - 63.9976 %

Now, total = 12.6264 + 29.1647 + 58.2090 = 109.9446

Hence, the gram formula mass of Li2SO4 = 109.9446.

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Q:

The Constituent Assembly of India started functioning from

A) 9th December,1946	B) 1st January, 1947
C) 26th January, 1947	D) 15th August, 1947

Answer & Explanation Answer: A) 9th December,1946

Explanation:

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Q:

What is "NIKKEI"?

A) Share Price Index of Tokyo Share Market	B) Name of Japanese Central Bank
C) Japanese name of country’s Planning Commission	D) Foreign Exchange Market of Japan

Answer & Explanation Answer: A) Share Price Index of Tokyo Share Market

Explanation:

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Exam Prep: Bank Exams

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Q:

Improve the bracketed part of the sentence.

Varun goes (for cinema) every Friday.

A) to cinema	B) to the cinema
C) in cinema	D) no improvement

Answer & Explanation Answer: B) to the cinema

Explanation:

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Filed Under: English
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Q:

Which classical dance is famous in Tamil Nadu?

A) Kuchipudi	B) Mohiniattam
C) Bharatanatyam	D) Kathakali

Answer & Explanation Answer: C) Bharatanatyam

Explanation:

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Filed Under: Indian Culture

76 7168

Q:

Decibel is the unit of

A) speed of light	B) intensity of sound
C) intensity of heat	D) None of these

Answer & Explanation Answer: B) intensity of sound

Explanation:

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Filed Under: Physics

15 7166

Q:

Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K?

A) K1k2/k1+k2	B) 2k1k2/k1+k2
C) K1+k2/k1k2	D) None

Answer & Explanation Answer: B) 2k1k2/k1+k2

Explanation:

We know that,

The equivalent K = $\frac{L 1 + L 2}{\frac{L 1}{K 1} + \frac{L 2}{K 2}}$

where L1 & L2 are plate1 & Plate2 thicknesses, K1 & K2 are coefficient thermal conductivity of plate1 & Plate2 respectively.

But here L1 = L2 = L (say)

Then K = L+L/(L/K1 + L/K2) = $\frac{2 K 1 K 2}{K 1 + K 2}$

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Q:

In plants, exchange of gases takes place through

A) Stomata	B) Palisade tissue
C) Spongy tissue	D) mid rib

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