Chemistry
Which Halogen exists in liquid state?
F2
C12
Br2
At
Br2
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Which of the following law states, matter can neither created nor destroyed during a chemical reaction?A. Constant proportion
B. Conservation of mass
C. Disproportion
D. Invisible particles
Which type of energy source is tidal energy?
A. Non-Renewable
B. Conventional
C. Exhaustible
D. Non-Conventional
Which of the following is an example of secondary electrical battery?
A. Leclanche cell
B. Nickel – Cadmium Battery
C. Dry Cell
D. Lithium Cell
When rose petal is dipped in a jar of sulphur dioxide
A. the petal gets discolourised
B. the colour of petal increases
C. there is no change in petal colour
D. the petal becomes a liquid
Addition of Sodium chloride to water
A. increases temperature of water
B. decreases temperature of water
C. no change in temperature
D. rapidly increases temperature and then decreases
The solid or liquid particles suspended in the air are called
A. Acid
B. Hydrocarbons
C. Aerosols
D. Water
On which quantum number does the orientation of atomic orbitals depend?
A. Principal Quantum Number
B. Azimuthal Quantum Number
C. Magnetic Quantum Number
D. Spin Quantum Number
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