CHEMISTRY Mcqs solved
1.
The branch of chemistry which deals with
radio activity , nuclear processes and properties is called
1. Industrial chemistry 2. Bio chemistry 3. Nuclear chemistry 4. Analytical chemistry
1. Industrial chemistry 2. Bio chemistry 3. Nuclear chemistry 4. Analytical chemistry
2.
Silicon forms ………… per cent of earth crust 1. 8 %
2. 47% 3. 28%
4. 78%
3.
Elements are represented by …..
1. Formulas 2. Signs 3. Symbols 4. Abbreviation
1. Formulas 2. Signs 3. Symbols 4. Abbreviation
4.
The symbol of thiosulphate is …………
1. SO4-2 2. SO3-2 3. S2O3-2 4. SO4-3
1. SO4-2 2. SO3-2 3. S2O3-2 4. SO4-3
5.
The chemical formula of lime stone is
1. CaO 2. CaCO3 3. C12H22O11 4. SiO2
1. CaO 2. CaCO3 3. C12H22O11 4. SiO2
6.
Atomic mass unit is abbreviated as
1. AMU 2. Amu 3. aMu 4. Amu
1. AMU 2. Amu 3. aMu 4. Amu
7.
The empirical formula of benzene is
1. HC 2. CO 3. CH 4. OH
1. HC 2. CO 3. CH 4. OH
8.
Atom having positive charge is called
1. Canion 2. Anion 3. Cation 4. Ion
1. Canion 2. Anion 3. Cation 4. Ion
9.
When a molecule losses or gains an electron
it forms a ………….
1. Anion 2. Cation 3. Ion 4. Moleculer ion
1. Anion 2. Cation 3. Ion 4. Moleculer ion
10.
Avagodro’s
number is
1. 6.62* 1023 2. 6.00*1023 3. 6.02*1023 4. 6.02*1024
1. 6.62* 1023 2. 6.00*1023 3. 6.02*1023 4. 6.02*1024
11.
Proton was discovered by
1. Goldstein
2. Thomas
3. Daniel
4. Emil
1. Goldstein
2. Thomas
3. Daniel
4. Emil
12.
Except electrons all other fundamental
particles that lie within the nucleus
1. Nucleolus
2. Neutrons
3. Nucleons
4. Protons
1. Nucleolus
2. Neutrons
3. Nucleons
4. Protons
13.
Shell
N has sub shells
1. One 2. Two 3. Three 4. Four
1. One 2. Two 3. Three 4. Four
14.
Beryllium has electronic configuration
1. 1s1 2. 1s2,2s2,2p1 3. 1s2,2s1 4. 2s2,2p4
1. 1s1 2. 1s2,2s2,2p1 3. 1s2,2s1 4. 2s2,2p4
15.
The
hydrogen third isotop is
1. Tritium 2. Protium 3. Deuterium 4. Alluminium
1. Tritium 2. Protium 3. Deuterium 4. Alluminium
16.
To
determine the age of carbon containing products the radio activity of ………..
isotop is measured
1. C12
2. C13
3. C14
4. C15
1. C12
2. C13
3. C14
4. C15
17.
Nutron was discovered in ……………
1. 1931 2. 1932 3. 1933 4. 1934
1. 1931 2. 1932 3. 1933 4. 1934
18.
Relationship between atomic masses of
several groups of three elements
1. Tetrad
2. Triad
3. Bivalent
4. Pentavalent
1. Tetrad
2. Triad
3. Bivalent
4. Pentavalent
19.
The
electronic configuration of boron family
is
1. ns1
2. ns2
3. ns2 np1
4. ns3 np4
1. ns1
2. ns2
3. ns2 np1
4. ns3 np4
20.
Br35
has electro negativity
1. 4.0 2. 3.2 3. 3.0 4. 2.7
1. 4.0 2. 3.2 3. 3.0 4. 2.7
21.
Attaining eight electrons in the valence
shell is called
1. Triad rule 2. Tetrad rule 3. Duplet rule 4. Octet rule
1. Triad rule 2. Tetrad rule 3. Duplet rule 4. Octet rule
22.
The
bond form due to mutual sharing of electrons
1. Ionic bond 2. Covalent bond 3. Bond 4. Electronic bond
1. Ionic bond 2. Covalent bond 3. Bond 4. Electronic bond
23.
The
energy required to break the bond between hydrogen and chlorine in hydrogen chloride is
1. 410kJ 2. 420kJ 3. 430kJ 4. 440kJ
1. 410kJ 2. 420kJ 3. 430kJ 4. 440kJ
24.
One
pascal is equal to
1. 1Nm-2 2. N-2 3. NM-2 4. Nm-3
1. 1Nm-2 2. N-2 3. NM-2 4. Nm-3
25.
All
inter molecular forces collectively called
1. Dipole-dipole 2. Hydrogen bonding 3. Van der waals 4. Ionic bonding
1. Dipole-dipole 2. Hydrogen bonding 3. Van der waals 4. Ionic bonding
26.
…………
configuration is stable one
1. Metallic 2. Noble gas 3. Ionic 4. Electronic
1. Metallic 2. Noble gas 3. Ionic 4. Electronic
27.
Identify the compound which is not soluble in
water
1. NaCl 2. C6H6 3. KBr 4. MgCl2
1. NaCl 2. C6H6 3. KBr 4. MgCl2
28.
The
product of pressure and volume of a fixed mass of gas is constant at a constant
temperature
1. Pascal’s law 2. Newton’s law 3. Boyle’s law 4. Charles’s law
1. Pascal’s law 2. Newton’s law 3. Boyle’s law 4. Charles’s law
29.
Diethyl ether has freezing point
1. -115C 2. -116C 3. -113C 4. -114C
1. -115C 2. -116C 3. -113C 4. -114C
30.
The
existence of an element in more than one form in same physical state
1. Electro plating 2. Galvanization 3. Allotropy 4. Sympatery
1. Electro plating 2. Galvanization 3. Allotropy 4. Sympatery
31.
Solids are classified as crystalline and
1. Metals 2. Amorphous 3. Allotropic 4. Vapours
1. Metals 2. Amorphous 3. Allotropic 4. Vapours
32.
Metal
alloys like ( brass , bronze ) has both
elements …………
1. Solids 2. Liquids 3. Gas 4. Vapors
1. Solids 2. Liquids 3. Gas 4. Vapors
33.
Molarity is represented by …….
1. M 2. m 3. Mol 4. Mole
1. M 2. m 3. Mol 4. Mole
34.
CuSo4
stands for
1. Calcium sulphate 2. Carbon sulphate
3. Crommium sulphate 4. Copper sulphate
1. Calcium sulphate 2. Carbon sulphate
3. Crommium sulphate 4. Copper sulphate
35.
Particles of colloids are big enough to
scatter the beam of light called
1. Tyndall effect 2. Green house effect
3. Vander wall effect 4. Charles effect
1. Tyndall effect 2. Green house effect
3. Vander wall effect 4. Charles effect
36.
Loss
of electron is called
1. Oxidation 2. Reduction 3. respiration 4. Redox reaction
1. Oxidation 2. Reduction 3. respiration 4. Redox reaction
37.
In
neutral molecule the algebric sum of the oxidation number of all elements is
1. 1.0
2. 0
3. 0.01
4. 0.001
1. 1.0
2. 0
3. 0.01
4. 0.001
38.
Substances
which can conduct electricity in their aqueous solutions called
1. Non electrolytes
2. Electrolytes
3. Strong electrolytes
4. Week electrolytes
1. Non electrolytes
2. Electrolytes
3. Strong electrolytes
4. Week electrolytes
39.
A
galvanic cell consists of ………… cells
1. Two 2. Three 3. One 4. Four
1. Two 2. Three 3. One 4. Four
40.
When
NaCl disassociates, Na has ……….. charge
1. Positive 2. Negative 3. Neutral 4. Two
1. Positive 2. Negative 3. Neutral 4. Two
41.
2Cl-(l) gives us on oxidation
1. Cl2(g) + 2e-
2. 2Cl2(g) + 2e+
3. Cl3(g) + 2e-
4. 2Cl2(g) + 3e-
1. Cl2(g) + 2e-
2. 2Cl2(g) + 2e+
3. Cl3(g) + 2e-
4. 2Cl2(g) + 3e-
42.
Depositing one
metal over other called
1. Allotropy 2. Distillation 3. Sublimation 4. Electroplating
1. Allotropy 2. Distillation 3. Sublimation 4. Electroplating
43.
‘’ K
‘’ has ………… atom number
1. 18 2. 19 3. 22 4. 11
1. 18 2. 19 3. 22 4. 11
44.
Silver is lustrous metal
1. Grey 2. White 3. Golden 4. Brown
1. Grey 2. White 3. Golden 4. Brown
45.
Gold
is a yellow soft ………….
1. Alloy 2. Solid 3. Metal 4. Crystal
1. Alloy 2. Solid 3. Metal 4. Crystal
46.
The
ionic size of calcium is
1. 186,102 pm
2. 160,72 pm
3. 197,99 pm
4. 170,81 pm
1. 186,102 pm
2. 160,72 pm
3. 197,99 pm
4. 170,81 pm
47.
The
property of metals to lose their valance electrons called
1. Electro negativity 2. Electro positivity
3. Allotropy 4. Ionization
1. Electro negativity 2. Electro positivity
3. Allotropy 4. Ionization
48.
The
element in a group 2 are called
1. Alkali 2. Metal 3. Alkaline earth 4. Alloy
1. Alkali 2. Metal 3. Alkaline earth 4. Alloy
49.
Alkali metal do not react with ………… directly
1. Hydrogen 2. Carbon 3.calcium 4. Nitrogen
1. Hydrogen 2. Carbon 3.calcium 4. Nitrogen
50 The ionization energy of magnesium is
1. 496
Kj/mol2. 738, 1450 Kj/mol
3. 590,1145 Kj/mol
4. 650,839 Kj/mol