Which of the following Is widely used as an anaesthetic?

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Which of the following Is widely used as an anaesthetic?

AMethane

BAmmonia

CChlorine

DChloroform

Nithin K ? Apr 20 '2018 at 20:56

Correct Answer: D [Chloroform]

Explanation:

Chloroform  is widely used as an anaesthetic, while Chlorine Is used for bleaching as well as oxidising agent. Methane , Marsh gas is used for preparing Methyl Alcohol. formaldehyde and Chloroform Ammonia is used in ice making industries and as fertilizer.

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If 45-(28 -(37- (15 - *))] = 58. then * is equal to:

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If 45-(28 -(37- (15 - *))] = 58. then * is equal to:

A-29

B-19

C19

D29

Nithin K ? Apr 20 '2018 at 20:41

Correct Answer: C [19]

Explanation:

\(45-[28-(37-(15-?))]=58\)

\(\implies 45 -[28-(37-15-?)]=58\)

\(\implies 45 -[28-22-?]=58\)

\(\implies 45-6+?=58\)

\(39+?=58 \implies = 58-39\)

\(=19\)

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Permanent hardness of water due to sulphates of metals can be destroyed by the use of

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Permanent hardness of water due to sulphates of metals can be destroyed by the use of

AZeolites

Bsulphonides

Clime

Dnitrates

Nithin K ? Apr 20 '2018 at 20:20

Correct Answer: A [Zeolites]

Explanation:

Temporary hardness of water can be removed easily by boiling water or by adding washing soda (Sodium Carbonate-hydrated). Permanent hardness cannot be removed by merely boiling or adding washing soda.

A complex salt called sodium aluminium silicate (zeolite) is used toremove permanent hardness.

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832.58 - 242.31 = 779.84 -?

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832.58 - 242.31 = 779.84 -?

A179.57

B199.57

C295.05

DNone of these

Nithin K ? Apr 20 '2018 at 20:8

Correct Answer: D [None of these]

Explanation:

832.58 - 242.31 = 779.84 - ?

=> 590.27 = 779.84 -?

=> ? = 779.84 - 590.27

= 189.57

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The value of log 0.01 (1000) is

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$$\text{The value of } log_{(0.01)} (1000)\text{ is}$$

A$$\frac{1}{3}$$

B$$-\frac{1}{3}$$

C$$\frac{3}{2}$$

D$$-\frac{3}{2}$$

Nithin K ? Apr 20 '2018 at 19:59

Correct Answer: D [\(-\frac{3}{2}\)]

Explanation:

\(log_{0.01}{1000} = \frac{\text{log 1000}}{\text{log 0.01}}\)

\(=\frac{\text{log }10^3}{\text{log }10^{-2}}\)

\(=\frac{3\text{ log 10}}{-2\text{ log 10}}\)

\(=-\frac{3}{2}\)

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Which of the following is present In hard water?

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Which of the following is present In hard water?

ACalcium

B Aluminum

CSodium

DChIorine

Nithin K ? Apr 19 '2018 at 22:47

Correct Answer: A [Calcium]

Explanation:

The hard water consists of Calcium and Magnesiurn (lnsoluble) salts.

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Which of the following is a non ferrous metal?

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Which of the following is a non ferrous metal?

ACobalt

BAluminium

CNickel

DIron

Nithin K ? Apr 19 '2018 at 22:41

Correct Answer: B [Aluminium]

Explanation:

Generally more costly than ferrous metals, non-ferrous metals are used because of desirable properties such as low weight (e.g. aluminium), higher conductivity (e.g. copper), non-magnetic property or resistance to corrosion (e.g. zinc). Some non-ferrous materials are also used in the iron and steel industries.

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