Q:

A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of

A) 18 m/s	B) 25 m/s
C) 30 m/s	D) 36 m/s

Answer & Explanation Answer: C) 30 m/s

Explanation:

The interval between object pass the same point is 4 sec.

That means in 2 sec, object reaches the top and in next 2 sec, it again reaches the same point.

By the info given, we can find the velocity of that point by using : v=u+(-gt)

0= u - 10×2

u = 20

Then the velocity at 25m is 20m/sec.

so the initial velocity is

$- v^{2} = u^{2} + (- 2 gh) 400 = u^{2} - 2 x 10 x 25 u^{2} = 900 = > u = 30 m / s$

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Q:

When was first train steamed off in India

A) 1848	B) 1853
C) 1875	D) 1880

Answer & Explanation Answer: B) 1853

Explanation:

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Filed Under: Indian Economy

19 7895

Q:

Which one of the following is commonly used as an indicator to measure the exact pH?

A) Eosin	B) Phenolphthalein
C) Universal indicator	D) Litmus

Answer & Explanation Answer: C) Universal indicator

Explanation:

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Filed Under: Chemistry
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Q:

India derives its name from

A) The Hindus	B) The Aryans
C) Indus River	D) Lord Indra

Answer & Explanation Answer: C) Indus River

Explanation:

The name India is originally derived from the name of the river Sindhu (Indus River).

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Filed Under: Indian History
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25 7890

Q:

What is the most commonly spoken language in the world?

A) Mandarin Chinese	B) English
C) Spanish	D) Hindi

Answer & Explanation Answer: A) Mandarin Chinese

Explanation:

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Filed Under: World Geography
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Q:

The man who is specialist in wine making is called as ?

A) Wenologist	B) Grapologist
C) Oenologist	D) None

Answer & Explanation Answer: C) Oenologist

Explanation:

Oenology is the science and study of wine and winemaking. So person who is specialist in that is called as Oenologist.

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Filed Under: General Science
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Q:

Alauddin Khilji's first military operation was against which of the following?

A) Gujarat	B) Ranthambore
C) Devagiri	D) Chittaur

Answer & Explanation Answer: B) Ranthambore

Explanation:

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Filed Under: Indian History
Exam Prep: Bank Exams

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Q:

One of the best known tribal rebellions in Bihar, Known as Ulgulan (meaning Great Tumult), was launched by the Mundas under the leadership of:

A) Kanhu	B) Sidhu
C) Birsa Munda	D) Rampa Munda

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