1.  Magnetite

2.  Malachite

3.  Cassiterite

4.  Pyrolusite

4
Correct Answer :

Magnetite


Explanation :
No Explanation available for this question

1.  1 in case of chemisorption

2.  between 0 and 1 in all cases

3.  between 2 and 4 in all cases

4.  1 in case of physical adsorption

4
Correct Answer :

between 0 and 1 in all cases


Explanation :
No Explanation available for this question

1.  Bronze

2.  Invar

3.  Steel

4.  Bell metal

4
Correct Answer :

Steel


Explanation :
No Explanation available for this question

1.  they have fixed value of pH

2.  these give unionised acid or base on reaction with added acid or alkali

3.  acids and alkalies in these solutions are shielded from attack by other ions

4.  they have large excess of H+ or OH- ions

4
Correct Answer :

these give unionised acid or base on reaction with added acid or alkali


Explanation :
No Explanation available for this question

1.  [BF4- and NH4+]

2.  [BCl3 and BaCl3]

3.  [NH3 and NO3-]

4.  [NF3 and BF3]

4
Correct Answer :

[BF4- and NH4+]


Explanation :
No Explanation available for this question

1.  Oxidation number

2.  Coagulation value

3.  Gold number

4.  Critical miscelle concentration

4
Correct Answer :

Gold number


Explanation :
No Explanation available for this question

1.  Sterility

2.  Convulsions

3.  Beri-Beri

4.  Cheilosis

4
Correct Answer :

Beri-Beri


Explanation :
No Explanation available for this question

1.  Na+ < Li+ < K+ < Rb+

2.  Li+ < K+ < Na+ < Rb+

3.  Rb+ < K+ < Na+ < Li+

4.  K+ < Na+ < Rb+ < Li+

4
Correct Answer :

Rb+ < K+ < Na+ < Li+


Explanation :
No Explanation available for this question

1.  Enzymes are least reactive at optimum temperature

2.  Enzymes are mostly proteinous in nature

3.  Enzyme action is specific

4.  Enzymes are denaturated by ultraviolet rays and at high temperature

4
Correct Answer :

Enzymes are least reactive at optimum temperature


Explanation :
No Explanation available for this question

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