Sodium carbonate is produced by
A. Haber process B. Ammonia Solvay process C. Decons process D. Lead chamber process
Electron was discovered by
A. Michael Faraday B. James Maxwell C. Yuri Gagarin D. J.J Thomson
The increase in the rate of reaction due to the increase in temperature is due to
A. Increased energy only B. Successful collision only C. Elastic collisions D. Increased energy and successful collisions
One of three p-orbitals on nitrogen atom overlaps with pi bonding system in ‘benzene ring’ in the molecule of.
A. Phenylamine B. Ethylamine C. Propylamine D. Methylamine
Chloro fluoro Carbons (CFCs) are not
A. Flammable only B. Toxic only C. Harmful Flammable and toxic D. Non-flammable
The percentage by mass of any element is calculated with the help of
A. Formula of compound only B. Relative atomic masses only C. Nucleon number D. Formula of compound and relative atomic masses
The most abundant component in Earth’s atmosphere (or Air) is
A. Hydrogen B. Oxygen C. Nitrogen D. Carbon dioxide
A rectangle-shaped open-to-sky tank of water has a length of 2 m and a width of 1 m. If the atmospheric pressure is assumed to be 100 kPa and thickness of the tank walls is assumed to be negligible, the force exerted by the atmosphere on the surface of the water is
A. 20 kN B. 50 kN C. 100 kN D. 200 kN
Speed of a body in particular direction can be called
A. Acceleration B. Displacement C. Velocity D. Distance
At constant temperature, resistance and cross-sectional area are
A. Directly related B. Not related C. Remains constant D. Inversely related