Chemical Process - Study Mode

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[#211] In the production of soda ash by Solvay process, the by-product is

(A) CaCl 2

(B) NH 4 Cl

(C) NH 3

(D) NaOH

Correct Answer

(A) CaCl 2

[#212] Sea water contains about __________ ppm of bromine.

(A) 5

(B) 70

(C) 500

(D) 1700

Correct Answer

(B) 70

[#213] Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C.

(A) -83

(B) -183

(C) -196

(D) -218

Correct Answer

(B) -183

[#214] Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.

(A) -53

(B) -103

(C) -183

(D) -196

Correct Answer

(C) -183

[#215] Parathion and Malathion are

(A) Pesticides

(B) Plasticisers for unsaturated polysters

(C) Pain-relieving drugs (analgesic)

(D) Tranquilisers

Correct Answer

(A) Pesticides