FINAL ANSWER KEY

Question Paper Code:
Category Code:
Exam:

Medium of Question:
Date of Test
Alphacode
Question1:-Hardness in water is caused by the presence of:
A:-sodium chloride
B:-sodium carbonate
C:-calcium chloride
D:-potassium nitrate
Correct Answer:- Option-C
Question2:-pH of acidic solution is:
‏4ھ‎
‎B:-7
‎C:-less than 7
D:-more than 7
Correct Answer:- Option-C

55/2016/OL

012/2010

Junior Instructor Laboratory Assistant-Chemical
Plant

English

13-06-2016

A

Question3:-Which of the following methods empolyes ion-selective membranes?

A:-sofening

B:-electrodialysis

C:-super-filtration

D:-flash evaporator

Correct Answer:- Option-B
Question4:-Coagulants help in settling of:

A:-suspended impurities only

B:-fine suspended impurities

C:-colloidal particles only

D:-both the suspended and colloidal particles.

Correct Answer:- Option-D

Question5:-Ultraviolet rays are used in water treatment for :

A--illumination
B:-sterilization
C:-coagulation
D:-sedimentation

Correct Answer:- Option-B

Question6:-Which of following fuel gases possess the highest calorific value?

A:-water gas

B:-coal gas

C:-producer gas
D:-natural gas

Correct Answer:- Option-B

Question7:-The process of splitting of bigger hydrocarbons into smaller hydrocarbon molecules, is called:

A:-pyrolysis

B:-thermal decomposition

C:-cracking

D:-combustion

Correct Answer:- Option-C
Question8:-Analysis of flue gases is done by:

A:-Boy’s gas calorimeter

B:-Orsat apparatus

C:-retort

D:-Bomb calorimeter

Correct Answer:- Option-B
Question9:-Lignite is: