More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
The amount of oxygen in the lithosphere is about
Choose an answer
35.50%
40.60%
46.60%
50.50%
Previous
Skip
Next
Question # 2
Sponification is the hydrolysis of fats or oil with an:
Choose an answer
alkali
base
enzyme
metallic ion
Previous
Skip
Next
Question # 3
The buffering property of proteins is due to the presence of
Choose an answer
Acidic and basic group
Hydrogen bonds
Indole group
Hyrophobic
Previous
Skip
Next
Question # 4
Half of the mass of atmosphere is concentrated above earth at the hieght of
Choose an answer
40 Km
25-28 Km
5-6 Km
100 Km
Previous
Skip
Next
Question # 5
A chemical inert and heat resistant plastic, that is made from tetrafluoroethylene, is called
Choose an answer
teflon
PVC
Bakelite
polyamide
Previous
Skip
Next
Question # 6
Optimum PH for enzyme pepsin is
Choose an answer
01
2
05
6.5
Previous
Skip
Next
Question # 7
Why is CO called as pollutant? reason is:
Choose an answer
It combines with oxygen
It inactivates glycoblysis
It combines with hemoglobin
Inactivates nerves
Previous
Skip
Next
Question # 8
The destruction of the biological nature and activity of proteins by heat or chemical agent is called:
Choose an answer
Dehydration
Oxidation
Denaturation
Polymerization
Previous
Skip
Next
Question # 9
The boiling point of radon (211 K) is higher than boiling point of Helium (4.4 K) because
Choose an answer
the atomic number of Rn is larger than that of the He
the atomic mass of Rn is larger than that of He
the dispersion forces between Rn atoms are more prominent that between He atoms
Rn atoms are joined by dipole-dipole force whereas He atoms are joined by hydrogen bonding
Previous
Skip
Next
Question # 10
The structural isomerism arises due to the difference in the
Choose an answer
Number of atoms in the molecule
Arrangements of atoms in the molecule
Number as well as arrangement of atoms in the molecule
Spatial arrangement of atoms
Previous
Skip
Next
Question # 11
Choose the example having hexagonal system:
Choose an answer
graphite
sugar
sulphur
diamond
Previous
Skip
Next
Question # 12
The spectrum of helium is expected to be similar to that of
Choose an answer
H
Li
+
Na
He
+
Previous
Skip
Next
Question # 13
The Mn
3+
has ______ color
Choose an answer
Violet
Green
Red/brown
No color
Previous
Skip
Next
Question # 14
Mixture of alcohol and water can be separated by
Choose an answer
Solvent extraction techniques
Crystallization
Precipitation and filtration
Fractional distillation
Previous
Skip
Next
Question # 15
Which acid is used in the manufacture of synthetic fibre?
Choose an answer
Formic acid
Oxalic acid
Carbonic acid
Acetic acid
Previous
Skip
Next
Question # 16
Acetic acid is manufactured by the fermentation of
Choose an answer
Ethanol
Methanol
Ethanal
Methanal
Previous
Skip
Next
Question # 17
Pollution is
Choose an answer
Removal of top soill
Release of toxic/undesirable materials in enevironment
Conversation of energy
All the above
Previous
Skip
Next
Question # 18
Plastics are a pollution problem because many plastics:
Choose an answer
Are made from petroleum
Are very inflammable
Burn to produce toxic fumes
Decompose to produce toxic products
Previous
Skip
Next
Question # 19
The uncertainty principle was stated only
Choose an answer
De Brogilie
Heinsenberg
Einstein
Schrodinger
Previous
Skip
Next
Question # 20
Solution may have units
Choose an answer
Molarity
Molality
Mole fraction
All of them
Previous
Skip
Next
Question # 21
A limiting reactant is one which according to the stoichiometric equation
Choose an answer
Has excess mass
Has least mass
Has excess number of moles
Has least number of moles
Previous
Skip
Next
Question # 22
A molecule in which sp
2
hybrid orbitals are used by the central atom in forming covalent bonds in
Choose an answer
He
2
SO
2
PCl
5
N
2
Previous
Skip
Next
Back