Complete Chemistry Test - SA II - Class 9 MCQ
25 Questions MCQ Test - Complete Chemistry Test - SA II
What information we get from molecular formula
A. It represents one molecule of the substance
B. It does not tells the name of the substance
C. It tells about the type of atoms
D. It represents formula mass unit of one substance
A. It represents one molecule of the substance
B. It does not tells the name of the substance
C. It tells about the type of atoms
D. It represents formula mass unit of one substance
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Which of the following elements are present in Quick Lime?
Out of 4 g of methane and 11 g of CO2 which has more molecules?
Match the following with correct response.
(1) Cobalt
(2) Copper
(3) Sulphur
(4) Sodium
(A) S
(B) Co
(C) Na
(D) Cu
What according to Dalton’s atomic theory is true among the following-
A Atom is divisible into Protons, electrons and neutrons
B Atoms of the same element have different atomic masses.
C Atoms are the ultimate indivisible particle of matter
D Atoms of same element have same atomic masses size and chemical properties
Statement A: Atoms can exist independently.
Statement B: The law of constant proportions is applicable only to pure chemical compounds.
Which of the two Statements is true?
Match the following with correct response.
(1) Ozone
(2) Helium
(3) Oxygen
(4) Phosphorous
(A) Monoatomic
(B) Tetra atomic
(C) Diatomic
(D) Triatomic
Calculate the number of Mg atoms in 0.024 g of Mg.
The atomic mass of calcium is 40 the number of moles in 60 g of calcium are:
Match the following with correct response.
(1) 1 mole of O2
(2) 1 mole of N
(3) 1 mole of C
(4) 1 mole of H2O
(A) 6.022×1023 molecules
(B) 12g
(C) 6.022×1023 atoms
(D) 18g
Match the following with correct response.
(1) Carbon
(2) Sodium
(3) Argon
(4) Helium
(A) 2,8,1
(B) 2
(C) 2,8,8
(D) 2,4
Which of the following is correct about atom?
A. It is the smallest unit of matter
B. Size of atom is very large as compared to the nucleus of the atom
C. In an atom number of protons is equal to number of electrons
D. Atoms are stable
Match the following with correct response.
(1) Canal rays consist of positively charged particles protons
(2) Electrons are distributed in shells
(3) Centre of an atom is dense
(4) Atom is indivisible
(A) Rutherford
(B) E.Goldsten
(C) J. Dalton
(D) Neil Bohr
According to 2n2 rule 32 electrons can be assigned to which shell-
Which of the following air pressures in the discharge tube is appropriate for the production of cathode rays?
What was the source of alpha particles in Rutherford scattering experiment?
“Electrons present in the extra nuclear portion are not stationary rather they revolve around the nucleus at high speed following a circular path”, Who said this?
Isotopes of an element have
A. Same chemical properties
B. Same atomic masses
C. Different atomic numbers
D. Atoms of same element
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