Q.1
An emulsifier is an agent which
Q.2
Which one of the following elements is least likely to be found in commercial fertilisers?
Q.3
The nuclear particle having no mass and no charge, but only spin is
Q.4
Ethanol containing 5% water is known as
Q.5
When there are two electrons in the same orbital, they have:
Q.6
Which of the following acts as best adsorbent?
Q.7
Hamburger effect is otherwise known as–
Q.8
Yellow Cake an item of smuggling across border is
Q.9
Silicon is used in
Q.10
The absolute temperature of a gas is doubled and the pressure is reduced to half, the volume of the gas
Q.11
What do you understand by the term Espuma ?
Q.12
Cloud is a colloidal dispersion of
Q.13
Which one of the following is not a fertilizer?
Q.14
An inert gas mixed with oxygen given to patients suffering from restricted breathing is
Q.15
Which of the following elements is obtained from seaweeds ?
Q.16
Which one of the following statements is not correct? Vulcanisation of rubber makes it
Q.17
Muddy water is treated with alum in purification process, it is termed as :
Q.18
Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ?
Q.19
The orientation of an atomic orbital is governed by
Q.20
'Atomic theory' of matter was given by
Q.21
Alcohol prepared by the distillation of wood is :
Q.22
The antiparticle of an electron is
Q.23
Nucleons are regarded as composites sub-particles known as
Q.24
Gelatin is mostly used in making ice-creams in order to
Q.25
The inert gas used as beacon light is
Q.26
The transuranium elements are the chemical elements with atomic numbers greater than
Q.27
Which of the following elements is non-radioactive ?
Q.28
Which of the inert gases can form compounds?
Q.29
Isobars are lines joining places having equal
Q.30
Which of the following gases is mixed with oxygen for breathing by divers in aqua lungs?
Q.31
Silica gel is a
Q.32
The compounds formed when hydrogen combines with p-block elements are called
Q.33
If the sewage is fully oxidized, the nitrogen is in the form of
Q.34
The most suitable unit for expressing nuclear radius is :
Q.35
Conduction band electrons have more mobility than holes because they
Q.36
The noble gas used in radiotherapy is
Q.37
Which of the following is used in dating archaeological findings ?
Q.38
Vulcanized rubber contains sulphur
Q.39
Silicon is a
Q.40
In vulcanisation process, rubber can be hardened by adding
Q.41
Seaweeds are important source of
Q.42
Which among the following is used as a catalyst in the production of high octane fuels?
Q.43
If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by
Q.44
Extensively used nitrogenous fertilizer is
Q.45
The heat value of combustion of Gasoline is
Q.46
The total energy of revolving electron in an atom
Q.47
The strongest acid of the following is
Q.48
The chief constituent of vinegar is
Q.49
During fermentation of sugar, the compound which is always formed is :
Q.50
The metal ion present in Vitamin B12 is
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