Polyvinyl chloride is used in the production of
glass
alloy
pipes
ceramics
Correct answer is C
Polyvinyl chloride is used in the production of pipes. Polyvinyl chloride (PVC) is an odorless and solid plastic. It is most commonly white but can also be colorless or amber. It can also come in the form of white powder or pellets. PVC is made from vinyl chloride. The chemical formula for vinyl chloride is \(C_2H_3Cl\)
cyclohexane
cyclopentane
n- hexane
n - pentane
Correct answer is A
When a mixture of benzene vapour and hydrogen are passed over a nickel catalyst at 180ºc cyclohexane will be produced
Reduction of alkanones with LialH4 produces
primary alkanols
secondary alkanols
tertiary alkanols
polyhydric alkanols
Correct answer is B
Reduction of alkanones with \(LiAlH_4\) produces secondary alkanols.
Reduction of nitroalkanes, nitrites and amides is a route for the preparation of
amines
alkenes
polymers
detergents
Correct answer is A
Reduction of nitroalkanes, nitrites and amides is a route for the preparation of amines
A hydrocarbon X with a molar mass of 26 consists of 92.3% carbon. What is its molecular formular?
C2H2
C3H3
C4H4
C5H5
Correct answer is A
% of H2 = 100 - 92.3 = 7.7%
mole = Carbon [92.3 / 12] = 7.7
Hydrogen [7.7 / 1] = 7.7
divide with the lowest:
Carbon - 7.1 / 7.1 = 1
Hydrogen - 7.1 / 7.1 = 1
empirical formula = CH
(CH)n = 26
(12 + 1)n = 26
(13)n = 26
n = 26/13 = 2
molecular formula = C\(_2\)H\(_2\)