- (A) is incorrect. Weight is the force exerted by gravity on an object, not the amount of matter.
- (B) is incorrect. Mass is the amount of matter, not the force due to gravity.
- (C) is correct. Volume is indeed the amount of space occupied by a substance.
- (D) is correct. Temperatures below \(0^\circ\)C are possible in Celsius scale, but negative temperatures are not possible in the Kelvin scale. - (E) is correct. Precision refers to the closeness of repeated measurements. Thus, the correct answer is (3) (C), (D) and (E) Only.
Given below are some nitrogen containing compounds:
Each of them is treated with HCl separately. 1.0 g of the most basic compound will consume ....... mg of HCl.
(Given Molar mass in g mol\(^{-1}\): C: 12, H: 1, O: 16, Cl: 35.5.)
In the given structure, number of \( sp \) and \( sp^2 \) hybridized carbon atoms present respectively are: