Match the following : (1) Brass (i) Surgical instruments (2) Satellite (ii) Skin ointment (3) Lunar caustic (iii) Condenser tubes (4) Calamine (iv) Hair dye

(1)-(iii), (2)-(i), (3)-(iv), (4)-(ii)

(1)-(i), (2)-(iv), (3)-(iii), (4)-(ii)

(1)-(iv), (2)-(iii), (3)-(ii), (4)-(i)

(1)-(ii), (2)-(iv), (3)-(i), (4)-(iii)

Sodium or potassium salts of heavier fatty acids

A mixture of glycerol and alcohol

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What is the pH value of toothpaste?

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Important Questions on Chemistry

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Which one of the following is used for water softening

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Which one of the following sodium compounds is used for softening hard water ?

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Which one of the following statements is not correct?

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An antiseptic dettol is a mixture of two compounds '

A

' and '

B

' where

A

has

6 π

electrons and

B

has

2 π

electrons. What is

B

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Litmus paper changes to ______ colour when put in soap water.

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Which one of the following methods can be used to remove permanent hardness of water ?

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Which one of the following artificial sweeteners is modified sugar?

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Match the following :

(1) Brass	(i) Surgical instruments
(2) Satellite	(ii) Skin ointment
(3) Lunar caustic	(iii) Condenser tubes
(4) Calamine	(iv) Hair dye

HARD

General Science>General Science>Chemistry>Chemistry in Everyday Life

Which of the following is NOT a use of washing soda?

EASY

General Science>General Science>Chemistry>Chemistry in Everyday Life

Which of the following substances cause temporary hardness in water?

$1 . M g {(H C O_{3})}_{2}$

$2 . C a {(H C O_{3})}_{2}$

$3 . C a C l_{2}$

$4 . M g S O_{4}$

Select the correct answer using the code given below.

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Name the law in Physics which states that equal volume of all gases under the same conditions of temperature and pressure contain equal number of molecules.

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How many water molecules are present in one molecule of washing soda?

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Which of the following is used for removing permanent hardness of water ?

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Soap solution used for cleaning purpose appears cloudy. This is due to the fact that soap micelles can _____.

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The common name of sodium bicarbonate is:

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Chlorine atom and chloride ions ______.

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The required residual chlorine in drinking water at every tapping point should be_________ ppm

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The oxide of Nitrogen used in medicine as an anasthetic is _________?

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Which of the following is baking soda?

(A) $N a_{2} C O_{3} . 10 H_{2} 0$

(B) $N a H C O_{3}$

(D) $N H_{4} C l$

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Important Questions on Chemistry

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