Q.1
Williamson's synthesis is widely used in the laboratory preparation of
Q.2
Cyanide poisoning causes death in seconds because
Q.3
Peroxyacetyl nitrate is a
Q.4
What is used in storage batteries?
Q.5
Haloarenes are more stable than haloalkanes due to
Q.6
The unit of ionic product of water (Kw) is :
Q.7
The deterioration of a metal by an electrochemical process is commonly termed as
Q.8
Aqueous solution of which of the following is a good conductor of electricity
Q.9
Which colour is produce by Arsenic during flame test?
Q.10
PVC is obtained by the polymerisation of
Q.11
The polymerisation of which often following is used in manufacturing of polythene in industry ?
Q.12
Which one of the following minerals is found in Monazite sand ?
Q.13
Ultra purification of a metal is done by :
Q.14
German silver, an alloy, does not contain the metal
Q.15
Aluminium chloride is
Q.16
The cathode of a lead storage battery is made up of
Q.17
Which of the following is the main compound of voter ink?
Q.18
The heaviest naturally occurring element is:
Q.19
In which of the following ions , the colour is not due to d-d transition ?
Q.20
What is Zeolite?
Q.21
The depletion of Ozone layer is mainly due to
Q.22
The hydronium ion is
Q.23
Electric bulbs are filled with :
Q.24
Which one is a sublime substance?
Q.25
Milk is a
Q.26
Mixture can be
Q.27
Which one out of the following helps in burning ?
Q.28
Which one element from below list is liquid at room temperature?
Q.29
Which one of the following metals is used to galvanise iron ?
Q.30
Mercury is a :
Q.31
The first organic compound synthesised in the laboratory was
Q.32
A subshell with l = 2 can take up
Q.33
Two electrons in an orbital are differentiated by which of the following ?
Q.34
Among the following, carbonate ore of Zinc is
Q.35
The metal used for making aircrafts and rockets is
Q.36
When cathode rays strike a target of high atomic weight, they give rise to
Q.37
The common name of sodium bicarbonate is
Q.38
The compound that has the least value for octane number is :
Q.39
Baryllium Sulphate is less soluble in water due to
Q.40
How many electrons can be accommodated in d-orbital?
Q.41
Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ?
Q.42
Sodium vapour lamps glow with yellow colour. This is due to
Q.43
Which one of the following forms of phosphorus is most reactive?
Q.44
The length of double bond is _______ than single bond.
Q.45
Chile saltpeter is the common name of:
Q.46
Setting of plaster of paris involves
Q.47
The scientist who experimentally proved the existence of positron is
Q.48
Alum stops bleeding in minor cuts because of
Q.49
The first metal used by man was
Q.50
Which amidst the following is not a gem stone ?
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