Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ?

Question: 99.5% purity oxygen is used in
[A].

cutting and welding by oxy-acetylene flame.

[B].

hospitals for medicinal purposes.

[C].

gas masks and artificial breathing apparatus.

[D].

all (a), (b), and (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: Oil is a/an
[A].

mixture of glycerides.

[B].

mixture of glycerides of fatty acids.

[C].

solid at normal temperature.

[D].

ester of alcohols other than glycerine.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
[A].

coke and sand

[B].

brine and coal

[C].

coke and caustic soda

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.