Quicklime is represented by the formula

1.  Ca (OH)2

2.  CaO

3.  CaCO3

4.  CaHCO3

View Answer  
4
Correct Answer :

CaO


Explanation :
No Explanation available for this question

The catalyst used in the manufacture of sulphuric acid by contact process is

1.  Al2O3

2.  Cr2O3

3.  V2O5

4.  MnO2

View Answer  
4
Correct Answer :

V2O5


Explanation :
No Explanation available for this question

An isomer of ethanol is

1.  Methanol

2.  Diethyl ether

3.  Acetone

4.  Dimethyl ether

View Answer  
4
Correct Answer :

Dimethyl ether


Explanation :
No Explanation available for this question

The pH of a 0.001 M aqueous solution of sodium hydroxide will be

1.  5.0

2.  7.5

3.  9.0

4.  11.0

View Answer  
4
Correct Answer :

11.0


Explanation :
No Explanation available for this question

Which of the following poisonous gases is formed when chloroform is exposed to light and moist air

1.  Mustard gas

2.  Phosgene

3.  Chlorine

4.  Carbon monoxide

View Answer  
4
Correct Answer :

Phosgene


Explanation :
No Explanation available for this question

The half-life period of a radioactive element is 120 days. After 480 days 4.0 gm of the element will be reduced to (.....) gms.

1.  2.0

2.  1.0

3.  0.5

4.  0.25

View Answer  
4
Correct Answer :

0.25


Explanation :
No Explanation available for this question

A certain sample of gas has a volume of 0.2 litres measured at 1 atm. pressure and 00 C. At the same pressure but at 273 0c. Its volume will be

1.  0.4 litres

2.  0.8 litres

3.  27.8 litres

4.  55. 6 litres

View Answer  
4
Correct Answer :

0.4 litres


Explanation :
No Explanation available for this question

The cell reaction of a cell is Mg(g)+Cu2+(aq)→Cu(g)+Mg2+(aq).If the standard reduction potentials of magnesium and copper are -0.33 and +2.38V respectively

1.  +2.03V

2.  -2.03V

3.  +2.71V

4.  -2.71V

5.  deleted

View Answer  
5
Correct Answer :

+2.71V


Explanation :
No Explanation available for this question

A mixture contains four solid organic compounds A,B,C,D.On heating only C changes from solid to vapours state.C can be seperated from the rest in the mixture by:

1.  Distillation

2.  Sublimation

3.  fractional distillation

4.  Crystallization

5.  deleted

View Answer  
5
Correct Answer :

deleted


Explanation :
No Explanation available for this question

Identify A and B in the following reactions

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question
Previous Next

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python