Practice Quiz set 2 - general science mcq Online Quiz (set-1) For All Competitive Exams

Q-1)   At NTP, the least volume will be occupied by 15 g of which one of the following ?

(a) $N_2$

(b) N$H_3$

(c) $O_2$

(d) Ne

Q-2)   The boiling point of alcohol is 78°C. What is this temperature in Kelvin scale

(a) 375 K

(b) 373 K

(c) 351 K

(d) 78 K

Q-3)   Which one of the following elements shows variable equivalent mass?

(a) Calcium

(b) Zinc

(c) Silver

(d) Iron

Q-4)   A pungent smell often present near the urinals is due to

(a) ammonia

(b) sulphur-di-oxide

(c) chlorine

(d) urea

Q-5)   The chemical name of 'Marsh gas' is

(a) Propane

(b) Ethene

(c) Methane

(d) Hexane

Q-6)   Which one of the following petroleum refinary products has the lowest boiling point?

(a) Gasoline

(b) Kerosene

(c) Diesel

(d) Lubricating oil

Q-7)   The atomic weights are expressed in terms of atomic mass unit. Which one of the following is used as a standard?

(a) $^16O_8$

(b) $^1H_1$

(c) $^12C_6$

(d) $^35Cl_17$

Q-8)   Solutions with low concentrations of solutes are

(a) solvents

(b) dilute

(c) concentrated

(d) None of these

Q-9)   The main component of Gobar gas is?

(a) Ethylene

(b) Chlorine

(c) Hydrogen

(d) Methene

Q-10)   Two substances A and B when brought together form a substance C with the evolution of heat. The properties of C are entirely different from those of A and B. The substance C is

(a) a mixture

(b) an element

(c) a compound

(d) none of these.