The gas used to extinguish fire, is

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The gas used to extinguish fire, is

ANeon

B Nitrogen

C Carbon dioxide

DCarbon monoxide

Nithin K ? Apr 21 '2018 at 16:30

Correct Answer: C [Carbon dioxide]

Explanation:

carbon dioxide Sodium bicarbonate, regular or ordinary used on class B and C fires, was the first of the dry chemical agents developed. In the heat of a fire, it releases a cloud of carbon dioxide that smothers the fire. That is, the gas drives oxygen away from the fire, thus stopping the chemical reaction.

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Which of the following law not relate to gases?

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Which of the following law not relate to gases?

ABoyle’s law

BCharles law

CGay-Lussac’s law

DFaraday’s law

Nithin K ? Apr 21 '2018 at 16:26

Correct Answer: D [Faraday’s law]

Explanation:

Faraday's laws deals with electrolysis  and not with gases.

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A does a work in 10 days and b does the same work In 15 days In how many days they together will do the same work?

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A does a work in 10 days and b does the same work In 15 days In how many days they together will do the same work?

A5 days

B6 days

C8 days

D10 days

Nithin K ? Apr 21 '2018 at 16:18

Corrct Answer: B [6 days]

Explanation:

\(\text{A's one day work =}\frac{1}{10}\)

\(\text{B's one day work = }\frac{1}{15}\)

\(\text{(A+B)'s one day's work }\)

\(=\frac{1}{10} + \frac{1}{15}\)

\(=\frac{3+2}{30}\)

\(=\frac{1}{6}\)

\(\therefore \text{A and B together work in 6 days. }\)

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Faraday's law is associated with,

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Faraday's law is associated with,

Aelectrolysis

Breaction of gases

Cpressure of gases

Dtemperature and pressure

No answer description available for this question. Let us discuss.

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Find the odd man out: 8, 27, 64, 100, 125, 216, 343

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Find the odd man out:
8, 27, 64, 100, 125, 216, 343

A27

B100

C125

D343

Nithin K ? Apr 21 '2018 at 15:58

Correct Answer: B [100]

Explanation:

The pattern is \(2^3, 3^3, 4^3, 5^3, 6^3, 7^3.\) But, 100 is not a perfect cube.

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Which of the following acids is found In digestive juices?

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Which of the following acids is found In digestive juices?

ALactic acid

BTannlc add

CAmIno acid

DHydrochlorIc acid

Nithin K ? Apr 21 '2018 at 15:49

Correct Answer: D [HydrochlorIc acid]

Explanation:

Hydrochloric Acid  (CHCI) is found In digestive juices in Stomach.

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Brown-ring test la used for

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Brown-ring test la used for

Aanaysis of nitrates

BIdentIfication of certain ele ments In a solution

Cmeasurement of nitrogen is an organic compound

DNone of these

Nithin K ? Apr 20 '2018 at 21:27

Correct Answer: A [anaysis of nitrates]

Explanation :

A common nitrate test, known as the brown ring test can be performed by adding iron(II) sulfate to a solution of a nitrate, then slowly adding concentrated sulfuric acid such that the acid forms a layer below the aqueous solution.

A nitrate test is a chemical test used to determine the presence of nitrate ion in solution.

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