Q:

Which of the following reactions are exothermic?

$1) C + O_{2} \to {CO}_{2} 2) 2 Mg + O_{2} \to 2 MgO 3) {CuSO}_{4} + 5 H_{2} O \to {CuSO}_{4} . 5 H_{2} O 4) All the above$

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

Answer & Explanation Answer: D) 4

Explanation:

Here all the given options are Exothermic reactions. Exothermic reactions are those reactions which involves the release of heat.

Generally all the combining reactions are exothermic in nature.

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15 150587

Q:

From the following pairs, find the one which is correctly matched?

A) Scurvy- Thiamine	B) Tuberculosis- ATS
C) Tetanus- BCG	D) Malaria- Chloroquine

Answer & Explanation Answer: D) Malaria- Chloroquine

Explanation:

Chloroquine is a medication used to prevent and to treat malaria.

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82 148846

Q:

Improve the bracketed part of the sentence.

As the financial situation worsened we realized that we were heading (toward) a disaster.

A) along	B) into
C) for	D) no improvement

Answer & Explanation Answer: C) for

Explanation:

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0 148078

Q:

Select the antonym of

cameo

A) trinket	B) gem
C) bauble	D) plain

Answer & Explanation Answer: D) plain

Explanation:

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30 148045

Q:

Find the missing Number?

Find the missing number

Answer

How ?

7*6 = 4 2
9*9 = 8 1
5*3 = 1 5
6*2 = 1 2

Workspace

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Subject: Number Puzzles

1912 147171

Q:

Select the antonym of

VILE

A) virtuous	B) coarse
C) vicious	D) abject

Answer & Explanation Answer: A) virtuous

Explanation:

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Q:

Select the synonym of

spartan

A) garish	B) forgiven
C) civilized	D) brave

Answer & Explanation Answer: D) brave

Explanation:

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9 144221

Q:

Select the antonym of

ingestion

A) gulp	B) slug
C) excrete	D) chug

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