Science Chemistry MCQ-211

General Science-Chemistry MCQ test for MPPSC,SSC,JPSC,UPPSC,CDS,UPSC,CivilsPrelims,NDA Exams



Which one of the following is the correct oxidation number of iron (Fe) in hexacyanoferrate ion [Fe (CN)6]4- ?

 
 
 
 

Arrange the following acids in decreasing order of acidic strength
HI, HCI, HF, HBr

 
 
 
 

The pH of water at 250 C is 7 . When it is heated to 1000 C. The pH of water

 
 
 
 

Consider the following statements: In nuclear power reactors:

1) Uranium-235 is used as the fission material.
2) Graphite is used as a moderator.
3) Rods of lead are used to control the rate of nuclear reaction.

Which of the above statements are correct?

 
 
 
 

Which one of the following is a mixture?

 
 
 
 

Amalgam is a mixture of:

 
 
 
 

Match the following:

A . Sodium Palmitate 1 . Ore
B . Galena 2 . Fertilizer
C . NPK 3 . Soap
D . Cellulose 4 . Natural polymer

A B C D

 
 
 
 

Match the following:
Theory

A . Theory of Nuclear Fission
B . Big Bang Theory
C . Quantum Theory of Matter
D . Wave Theory of Light

Scientist

1 .George Gamow
2 . W . Heisenberg
3 . Bohr and Wheeler
4 . Huygens

A B C D

 
 
 
 

The most electronegative element among the following is :

 
 
 
 

For the reaction

2SO2z (g) + O2z (g) 2SO3z (g) + heat The yield of SO3z will be maximum if

 
 
 
 

Assertion (A) : Conductivity of acetic acid solution increases as more water is added to the solution.

Reason (R) : Water ionizes into H+ and OH ions

Select your answer using the codes

 
 
 
 

Assertion (A): In a chemical reaction, a catalyst increases the rate of a reaction

Reason (R) : Catalyst increases activation energy.

Choose the correct answer by using the following codes

Codes:

 
 
 
 

Assertion (A) : Zinc is used for galvanisation of iron.

Reason (R): Zinc is an amphoteric element. Select the answer by using codes

Codes :

 
 
 
 

Which of the following metals/elements are magnetic ?

Cobalt
Lead
Nickel
Silver

 
 
 
 

Which of the following exhibit variable valency ?
Sodium
Chromium
Copper
Zinc

Select the correct answer using the codes given below

 
 
 
 

Which among the following gas is usually tilled in the electric bulb?

 
 
 
 

___ alloys is used for making magnets,

 
 
 
 

Assertion (A) : Hydrogen atom does not emit X-rays.

Reason (R) : Hydrogen atom has a single electron.

Choose the correct answer by using codes

 
 
 
 

High B.P. of H2O is due to

 
 
 
 

Match the following:

A . Aluminium 1 . Monazite
B . Uranium 2 . Pitch blende
C .Thorium 3 . Bauxite
D . Lead 4 . Galena
5 . Haematite

ABCD

 
 
 
 

Which one of the following is the ore of lead ?

 
 
 
 

Galvanised iron sheets have a coating of:

 
 
 
 

Which of the following metals was first discovered by man?

 
 
 
 

Which one of the following is the basis of modern periodic table?

 
 
 
 

Why the diamond is harder than graphite?