Q.1
The chemical name of baking soda is
Q.2
What is the chemical name for ‘Baking Soda’ ?
Q.3
The chemical name of ‘Common salt’ is
Q.4
A pungent smell often present near the urinals is due to
Q.5
What is 'milk of magnesia' chemically?
Q.6
Which one of the following is a micro-element ?
Q.7
Normal rainwater has a pH level of
Q.8
Which one of the following is used as preservative for foodstuff ?
Q.9
Saline soil contains
Q.10
Sour milk contains
Q.11
The pH of lemon juice is expected to be
Q.12
The main source of Naphthalene is
Q.13
Food cans are coated with tin and not with zinc because
Q.14
Cinnabar is an ore/mineral of
Q.15
Which of the following processes is used for the production of Biodiesel ?
Q.16
Atoms having the same number of protons but different number of neutrons are called :
Q.17
Ammonial is a mixture of
Q.18
All isotopes of the same element have ________
Q.19
The fundamental particles present in the nucleus of an atom are
Q.20
A powerful eye irritant present in smog is
Q.21
Main pollutant present in automobile exhaust is
Q.22
Which of the following pollutants is main product of automobile exhaust ?
Q.23
Which of the following appeared to be with a significant potential for accumulation through food chains ?
Q.24
The constituents of automobile exhaust that can cause cancer is/are :
Q.25
The acid which fails to liberate carbon dioxide from sodium bicarbonate is :
Q.26
Basicity of boric acid, H3BO3 is
Q.27
Antacids are found in drugs that give relief to
Q.28
The percentage of carbon in cast iron is :
Q.29
Chemical properties of isotopes
Q.30
Which of the following does the nucleus of an atom consists of?
Q.31
J.J. Thomson’s proposed model of atom is generally called ________ model.
Q.32
What particles move around the nucleus of an atom and are negatively charged?
Q.33
Which of the following is not a natural source of air pollution ?
Q.34
Nylon threads are made of
Q.35
CNG used in automobiles to check pollution, mainly consists of
Q.36
The liquid waste from kitchens and baths, of residences is known as :
Q.37
The smog is essentially caused by the presence of
Q.38
The depletion in Ozone layer is caused by ________ .
Q.39
Higher concentration of nitrogen dioxide in atmosphere air causes
Q.40
Which of the following in automobile exhaust can cause cancer?
Q.41
The acid rain destroys vegetations because it contains
Q.42
Oxide of sulphur present in the atmosphere are washed down by rains to cause :
Q.43
The pH of human blood is between
Q.44
Brass is a solution of molten copper in
Q.45
The nucleus of an atom consists of
Q.46
All isotopes of the same element have ______________
Q.47
What are the major pollutants of cigarette smoke?
Q.48
Most poisonous pollutant in water is
Q.49
Which of the following is the maximum number of electrons that can be present in M-shell?
Q.50
Atoms of different elements have
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