Hi I would like to have the some of the questions including the answers for the Chemistry paper of the VOCLET examination held in 2013?

The Government of West Bengal Department of Technical Education is Going to Conduct the Polytechnic Examination tests in the month of March to April to the Public Examinations of 2016 under National Framework of Polytechnic Education. This is Most Famous University for Polytechnic courses in the condition of WB JEXPO which gives numerous courses to certificate like Civil, Electronics, IT, Mechanical, Comp. Science and so on.

Please find the some of the questions including the answers for the Chemistry paper of the VOCLET examination held in 2013:

Phenolphthalein is an:

a) Acid Salt b) Acid
c) Alkali d) Indicator

Ans: d) Indicator

Most commonly used vulcanising agent is :

a) Sulphur b) Dimond
c) Graphite d) Phosphorous

Ans: a) Sulphur

Which of the following compounds contains a double bond :

a) C 2 H 2 b) CH 4
c) C 2 H 4 d) C 2 H 4

Ans: c) C 2 H 4

Galvanization means plating by :

a) Zn b) Sn
c) Ni d) Cu

Ans: a) Zn

Which can stop bleeding due to small cut most easily ? :

a) K 2 SO 4 b) NaCl
c) Sugar d) Alum

Ans: d) Alum

Which is used as lubricant? :

a) NaOH b) FeCl 3
c) H 3 PO 4 d) MoS 2

Ans: d) MoS 2

The compound used in plastic industry:

a) C 2 H 4 b) HCHO
c) C 6 H 5 OH d) All of them

Ans: d) All of them

A chemical reaction is at equilibrium when:

a) The reactants are completely transformed into products
b) The rate of froward and backward reactions are equal

Coagulant used for the treatment of waste water is:

a) NaCl b) Na 2 SO 4
c) FeSO 4 d) KCl

Ans: c) Na 2 SO 4

Which of the following compounds decolorised red bromine water solution?

a) CH 4 b) C 2 H 6
c) C 2 H 4 d) CCl 4

Ans: CCl 4

What is the pH value of 10 -8 N HCL:

a) 8 b) 6
c) 6.98 d) 9

Ans: a) 8

For cathodic protection the mostly used metal is :

a) Zn b) Ca
c) Ni d) Mg

Ans: a) Zn

Natural rubber consists of :

a) 1,3 butadiene b) Isoprene
c) But-1- ene d) Styrene

Ans: a) 1,3 butadiene

Picric acid is :

a) 2,4,6 trinitro benzoic acid b) 2,4-dinitro benzoic acid
c) 2,6-dinitro phenol d) 2,4,6-trinitro phenol

Ans: d) 2,4,6-trinitro phenol

Which one of the following elements in coal decreases its Calorific value :

a) Nitrogen b) Hydrogen
c) Sulphur d) Carbon

Ans: a) Nitrogen

Octane number of Isooctane is:

a) 0
b) 100
c) 92
d) 104

Ans: b) 100