Q:

A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?

A) Depends on their masses	B) Sphere
C) Disk	D) Both reach at the same time

Answer & Explanation Answer: B) Sphere

Explanation:

Time does not depend on mass, else

$T \infty \sqrt{(1 + \frac{k^{2}}{R^{2}})}$

$\frac{k^{2}}{R^{2}}$ => is least for 'sphere' and

hence least time is taken by sphere.

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Filed Under: Physics
Exam Prep: AIEEE

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Q:

Who among the following has not received a Nobel Prize in literature

A) Derek Walcott	B) Pablo Neruda
C) Churchill	D) Ernest Hemingway

Answer & Explanation Answer: C) Churchill

Explanation:

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2 7190

Q:

The ruler of medieval India credited with the construction of the Grand Trunk Road is

A) Krishnadeva Raya	B) Babar
C) Sher Shah Suri	D) Jehangir

Answer & Explanation Answer: C) Sher Shah Suri

Explanation:

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Filed Under: Indian History

6 7188

Q:

How many holes are in this shirt?

how_many_holes_are_there_in_this_shirt1542186605.jpg image

A) 4	B) 7
C) 8	D) 6

Answer & Explanation Answer: C) 8

Explanation:

There are 8 holes in this given shirt.

how_many_holes_are_there_in_this_t-_shirt11542267000.jpg image

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34 7186

Q:

The boundary of which country does not seem to touch the Caspian sea?

A) Azerbaijan	B) Russia
C) Ukraine	D) Turkmenistan

Answer & Explanation Answer: C) Ukraine

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams

0 7186

Q:

Cutting and peeling of onion brings tears to the eyes because of the presence of _____ ?

A) Amino acid	B) Sulfur
C) Carbon	D) Fat

Answer & Explanation Answer: B) Sulfur

Explanation:

Cutting and Peeling of onion brings Tears to the eyes because of presence of Sulphur in the cell.

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Filed Under: Chemistry
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26 7182

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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Filed Under: Indian Politics

12 7179

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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Filed Under: Chemistry
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