MCQsFoundry.com brings to you 500+ 9th Standard Chemistry Mcqs which are new and latest. These Mcqs are never published on internet so far. For full information about all PPSC / FPSC / CSS / PMS latest jobs visit theiteducation.com
| 01 | 9th Class Chemistry Mcqs Chapter 01 | 02 | 9th Class Chemistry Mcqs Chapter 02 |
| 03 | 9th Class Chemistry Mcqs Chapter 03 | 04 | 9th Class Chemistry Mcqs Chapter 04 |
| 05 | 9th Class Chemistry Mcqs Chapter 05 | 06 | 9th Class Chemistry Mcqs Chapter 06 |
| 07 | 9th Class Chemistry Mcqs Chapter 07 | 08 | 9th Class Chemistry Mcqs Chapter 08 |
| 09 | 9th Class Chemistry Mcqs Chapter 09 | 10 | 9th Class Chemistry Mcqs Chapter 10 |
| 11 | 9th Class Chemistry Mcqs Chapter 11 | 12 | 9th Class Chemistry Mcqs Chapter 12 |
CHAPTER NO 2
Structure of Atoms
Encircle the most appropriate answer among the following options
1 Matter is composed of tiny indivisible particles called:
(a) Element
(b) Atom
(c) Compound
(d) substance
2 Atom of the same elements are
(a) Different
(b) Alike
(c) Comparable
(d) Active
3 Gas discharge tube experiment was performed by:
(a) J.J. Thomson
(b) Rutherford
(c) Dalton
(d) William Crooks
4 The pressure inside the discharge tube for the discovery of electron was kept
(a) 104 atm
(b) 10-4 atm
(c) 1014 atm
(d) 10-14 atm
5 Who was the pioneer of the vacuum tubes?
(a) William Crooks
(b) Rutherford
(c) Bohr
(d) Dalton
6 The nature of canal rays depends upon:
(a) Nature of anode
(b) Nature of Cathode
(c) Nature of gas
(d) Nature of particles\
7 The mass of proton is times more than that of an electron:
(a) 1830
(b) 1840
(c) 2
(d) 3
8 Which one of the followings is produced by the bombardment of the helium particle on beryllium?
(a) Alpha particle
(b) Beta particle
(c) Neutron
(d) Gamma rays
9 The highly penetrating rays are:
(a) Alpha particle
(b) Beta particle
(c) Neutron
(d) Both a & b
10 Neutron was discovered by
(a) Rutherford
(b) Chadwick
(c) Bohr
(d) William Crooks
11 In a -scattering experiment Rutherford used the foil made up of:
(a) Silver
(b) Tin
(c) Platinum
(d) Gold
12 Alpha particles are emitted by radioactive element:
(a) Carbon
(b) Polonium
(c) Neon
(d) Vanadium
13 Rutherford used the photographic plate coated with
(a) Zinc sulphide
(b) Zinc sulphite
(c) Zinc oxide
(d) Zinc sulphate
14 Who is the father of nuclear chemistry?
(a) Rutherford
(b) Dalton
(c) William Crooks
(d) Joseph Proust
15 According to quantum theory which type of spectrum is shown?
(a) Continuous spectrum
(b) Line spectrum
(c) Emission spectrum
(d) Absorption spectrum
16 Which of the following are fundamental particles of an atom?
(a) Ion
(b) Molecular ion
(c) Electron
(d) Positron
17 Matter is composed of tiny indivisible particles called:
(a) Ion
(b) Free radical
(c) Atom
(d) Molecules
18 The meaning of Latin word ‘atom’ is:
(a) Chroma
(b) Divisible
(c) Atomos
(d) Same place
19 Rutherford used a thin sheet of gold of thickness:
(a) 0.00004cm
(b) 0.004cm
(c) 0.0004cm
(d) 0.04cm
20 Canal rays were discovered by:
(a) Goldstein
(b) Thomson
(c) Dalton
(d) William Crooks
21 Protons were discovered by:
(a) Thomson
(b) Chadwick
(c) Moseley
(d) Goldstein
22 Rutherford bombarded a thin sheet of gold with:
(a) a-particles
(b) B-particles
(c) y-particles
(d) X-rays
23 Which apparatus was used by Sir William Crooks in his experiment?
(a) Test tube
(b) Gas discharge tube
(c) Zinc plate
(d) Electrolytic cell
24 Which are three fundamental particles of an atom?
(a) Ion, radicals, free radicals
(b) Electrons, protons, neutrons
(c) Electrons, protons, cathode rays
(d) Canal rays, X-rays, gamma rays
25 The electrons revolve around the:
(a) Atom
(b) Nucleus
(c) Protons
(d) Neutrons
26 Nature of gas present in discharge tube affects the nature of:
(a) Canal rays
(b) X-rays
(c) Cathode rays
(d) B-rays
27 Alpha particles are basically nucleus of:
(a) Lithium
(b) Sodium
(c) Potassium
(d) Helium
28 Plum pudding model was put forwarded by:
(a) Dalton
(b) Thomson
(c) Goldstein
(d) Chadwick
29 Neil Bohr won the noble prize in:
(a) 1914
(b) 1918
(c) 1922
(d) 1926
30 Canal rays travel in a straight line in a direction to cathode rays.
(a) Opposite
(b) Same
(c) Parallel
(d) None of these
31 Rutherford, Moseley, Bohr and other scientists performed experiments and revealed that:
(a) Atom has complex nature
(b) Atom is neutral
(c) Atom can be divisible
(d) Atom is beyond understanding
32 Canal rays carry:
(a) +ve charge
(b) -ve charge
(c) Neutral
(d) None of these
33 Which isotope of carbon is in abundance?
(a) 12C
(b) 13C
(c) 14C
(d) Both a and b
34 Isotopes have different number of:
(a) Electron
(b) Proton
(c) Neutron
(d) Charge
35 Energy of N-shell is more than the energies of:
(a) K
(b) K, L
(c) K, L, M
(d) L, M
36 Quantum means:
(a) Fixed volume
(b) Fixed energy
(c) Fixed pressure
(d) Fixed temperature
37 The subshells of M-shell are:
(a)s, p
(b) s, p, d
(c) s, p, d, f
(d) s, d, f
38 N-shell can accommodate a maximum of electrons.
(a) 8
(b) 2
(c) 18
(d) 32
39 Which one is the electronic configuration of Cl-1?
(a) 1s2, 2s2, 2p6, 3s1,
(b) 1s2, 2s2, 2p6, 3s2, 3p6
(c) Both a and b
(d) None of these
40 Which one is the electronic configuration of sulphur?
(a) 1s2, 2s2, 2p6, 3s2, 3p6,
(b) 1s2, 2s2, 2p6, 3s2, 3p6
(c) 1s2, 2s2, 2p6, 3s2, 3p4
(d) 1s2, 2s2, 2p6, 3s2, 3p3
41 The value of Planck’s constant is:
(a) 6.62×10-34 JS
(b) 6.62×10-24 Js
(c) 6.62×10-19 Js
(d) 6.62×10-12 Js
42 Which one of the followings results in the discovery of proton?
(a) Cathode rays
(b) Canal rays
(c) X-rays
(d) Alpha rays
43 The concept of orbit was introduced by:
(a) J.J. Thomson
(b) Rutherford
(c) Bohr
(d) Planck
44 Deuterium is used to make:
(a) Light water
(b) Heavy water
(c) Soft water
(d) Hard water
45 Co-60 is the source of:
(a) X-rays
(b) Beta radiations
(c) Alpha particles
(d) Gamma rays
46 For the production of cathode rays the pressure of gas inside the discharge tube was Kept:
(a) 10-1atm
(b) 10-2atm
(c) 10-4atm
(d) 10-5atm
47 Which one of the shells contains f-subshells?
(a) K
(b) L
(c) M
(d) N
48 Which one of the followings has only one neutron in its nucleus?
(a) Protium
(b) Deuterium
(c) Tritium
(d) Helium
49 Beta radiations are emitted by:
(a) Co-60
(b) C-12
(c) S-16
(d) Sr-90
50 Rutherford won nobel prize in:
(a) 1909
(b) 1906
(c) 1908
(d) 1910