Which one of the following metals does not form amalgams ?

Directions: The following items consist of two statements, one labelled as the 'Assertion (A)' and the other as 'Reason(R)'. You are to examine these two statements carefully and select the answer to these items using the codes given below : 
Assertion (A) : Sodium metal is stored under Kerosene.
Reason (R)     : Metallic sodium melts when exposed to air.  

Match List-I with List-II and select the correct answer using the codes given below the lists :
   List -I                                List-II
A. Blue Vitriol               1. Sodium bicarbonate 
B. Epsom salt               2. Sodium hydroxide 
C. Baking soda              3. Magnesium sulphate 
D. Caustic soda             4. Copper sulphate  

Consider the following statements about acetylene: 
1. It is used in welding industry 
2. It is a raw material for perparing plastics 
3. It is easily obtained by mixing silicon carbide and water 
Of these statements :

Match List-I with List-II and select the correct answer using the codes given below the lists:
   List-I                                        List-II
A. Potassium bromide                 1. Fertiliser 
B. Potassium nitrate                   2. Photography 
C. Potassium sulphate                 3. Bakery 
D. Monopotassium tartarate          4. Gunpowder 

Consider the following statements:
Coke is one of the materials of the charge added to blast furnace for the production of steel/iron. Its function is to 
1. Act as a reducing agent.
2. Remove silica associated with the iron ore.
3. Function as fuel to supply heat.
4. Act as an oxidizing agent  

Directions: The following items consist of two statements, one labelled as the 'Assertion (A)' and the other as 'Reason(R)'. You are to examine these two statements carefully and select the answer to these items using the codes given below : 
Assertion (A) : Phenyl is used as a household germicide.
Reason (R)     : Phenyl is a phenol derivative and phenol is an effective germicide 

Which one of the following is used as an antifreeze for the automobile engines ?

Directions: The following items consist of two statements, one labelled as the 'Assertion (A)' and the other as 'Reason(R)'. You are to examine these two statements carefully and select the answer to these items using the codes given below :
Assertion (A) : Formic acid is a stronger acid than acetic acid.
Reason (R)    : Formic acid is an organic acid.  

Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance ?