What is the molecular formula for Nitric acid ________ ?
A. HNO2
B. HNO3
C. HN2O2
D. H2NO4
Chemistry Mcqs
The discovery of neutron became very late because _______ ?
The discovery of neutron became very late because _______ ?
A. It does not carry any charge
B. It does not move
C. It is a fundamental particle
D. It is present in nucleus
The absolute value of charge on electron was determined by ________ ?
The absolute value of charge on electron was determined by ________ ?
A. J.J.Thomson
B. Chadwick
C. Rutherford
D. Robert Millikan
What is the molecular weight of Ammonia (NH3) ________ ?
What is the molecular weight of Ammonia (NH3) ________ ?
A. 17.031 g/mol
B. 18.031 g/mol
C. 19.031 g/mol
D. 27.033 g/mol
Sum of protons and neutrons in an atom gives off _________ ?
Sum of protons and neutrons in an atom gives off _________ ?
A. Nucleon numbera
B. Mass number
C. Atomic number
D. Both A and B
Which among the following is not a property of Ionic bond _________?
Which among the following is not a property of Ionic bond _________?
A. Sharing of electrons
B. Transfer of electrons
C. Losing of electrons
D. Gain of electrons
Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ?
Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ?
A. Zeolites
B. Sulphonides
C. Lime
D. Nitrates
What is the Chemical formula of Zinc Hydroxide _________ ?
What is the Chemical formula of Zinc Hydroxide _________ ?
A. Zn(OH)2
B. ZNO2
C. Zn2(OH)3
D. ZnOH
The valency of carbon Atom is __________ ?
The valency of carbon Atom is __________ ?
A. 1
B. 2
C. 3
D. 4
The valency of carbon is 4. As the atomic number of carbon is 6, it has a total of 6 electrons in one atom arranged in the following configuration. it needs to add 4 more electrons to the 2p sub-shell, or lose 4 electrons from the 2s and 2p sub-shells.
Which law states that the rate of the effusion of a gas is inversely proportional to the square root of its density?
Which law states that the rate of the effusion of a gas is inversely proportional to the square root of its density?A. Graham’s Law
B. Gay-Lussac’s law
C. Boyle’s law
D. None of these
B. Gay-Lussac’s law
C. Boyle’s law
D. None of these