Q:

Silver Mirror test is given by which one of the following compounds?

1. Benzophenone

2. Acetaldehyde

3. Acetone

4. Formaldehyde

A) Only 1	B) Only 2
C) 1 and 3	D) 2 and 4

Answer & Explanation Answer: D) 2 and 4

Explanation:

Both Formaldehyde and Acetaldehyde will give this test

$H C H O \overset{[A g (N H_{3})_{2}^{+}]}{\to} \overset{A g}{S i l v e r m i r r o r} + O r g a n i c c o m p o u n d$

$C H_{3} - C H O \overset{[A g (N H_{3})_{2}^{+}]}{\to} \underset{S i l v e r m i r r o r}{A g} + O r g a n i c c o m p o u n d$

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Filed Under: Chemistry
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66 135022

Q:

which of the following are chemical changes?

A) Cooking of Food

B) Digestion of Food

C) Freezing of water

D) Water is heated up

A) A & B	B) A, B & C
C) C & D	D) All the above

Answer & Explanation Answer: A) A & B

Explanation:

A) Cooking of Food ------ Chemical Change

B) Digestion of Food ----- Chemical Change

C) Freezing of water ----- Physical Change

D) Water is heated up ---- Physical Change

because here the chemical composition of the substance changes in A & B only.

Since we know that, If the chemical composition is changing then it is a chemical change and if the chemical composition is remaining the same, then it is a physical change.

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12 134785

Q:

Correct the sentence gramatically :

She went to gym despite of her illness.

A) to	B) despite
C) of	D) None of the above

Answer & Explanation Answer: C) of

Explanation:

In the given sentence,

Despite is the preposition. It does not take 'of' after it. Therefore, the grammar mistake in the given sentence is 'of'.

Hence, the correct sentence is "She went to gym despite her illness."

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52 134752

Q:

India became the first country to partner with which global company on Disaster Response Management?

A) Twitter	B) Google
C) Facebook	D) Microsoft

Answer & Explanation Answer: C) Facebook

Explanation:

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Q:

Select the synonym of

bouffant

A) braid	B) barren
C) hirsute	D) glabrous

Answer & Explanation Answer: A) braid

Explanation:

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Q:

How many times in a day, are the hands of a clock in straight line but opposite in direction?

A) 20	B) 22
C) 24	D) 48

Answer & Explanation Answer: B) 22

Explanation:

The hands of a clock point in opposite directions (in the same straight line) 11 times in every 12 hours. (Because between 5 and 7 they point in opposite directions at 6 o'clcok only).

So, in a day, the hands point in the opposite directions 22 times.

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Filed Under: Clock puzzles

972 133494

Q:

What is the national animal of Bangladesh?

A) Royal Bengal Tiger	B) Python
C) Goat	D) Buffalo

Answer & Explanation Answer: A) Royal Bengal Tiger

Explanation:

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Q:

Choose the word which is nearly opposite in meaning to the given word:-

Acrimonious

A) Legal	B) Severe
C) Cursive	D) Harmonious

Answer & Explanation Answer: D) Harmonious

Explanation:

Acrimonious means angry (typically of speech or discussion)Legal means relating to lawSevere means extremeCursive means written with the letters joinedHarmonious means sweet-soundingwhichis nearly opposite meaning to Acrimonious

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Filed Under: English
Exam Prep: Bank Exams

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