GK Questions and Answers, General Knowledge Quiz
Q. What is the current required to light a 60 W incandescent bulb in a domestic supply of 240 V?
1) 0.5 A
2) 0.25 A
3) 1.0 A
4) 5.0 A
Q. Which one of the following correctly represents the SI unit of resistivity?
1) 8#8486;
2) 8#8486; /m
3) 8#8486; - cm
4) 8#8486; - m
Q. The frequency of an alternating current is 3 Hz. It implies that -
1) there are 6 cycles/s
2) there are 3 cycles/s
3) there are 2 cycles/s
4) there is only 1 cycle
Q. Which one of the following is the correct order of the valencies of elements Ne, Si, N, and Mg?
1) Ne <Mg <N <Si
2) Si <N <Mg <Ne
3) Ne <N <Si <Mg
4) Mg <Ne <N <Si
Q. The mass number of argon is 40. Which one of the following statements is correct?
1) The number of protons in argon is 22
2) The number of neutrons in argon is 18
3) The number of electrons in argon is 18
4) The sum of the numbers of protons and electrons in argon is 40
Q. Which one of the following is a covalent compound?
1) Calcium oxide
2) Sodium nitride
3) Silicon carbide
4) Zinc sulphide
Q. Which one of the following is the correct molecular formula of ammonium carbonate if the valency of the ammonium ion is (+1) and the carbonate anion is (-2)?
1) (NH<sub>4</sub>)<sub>2</sub> CO<sub>3</sub>
2) NH<sub>4</sub> (CO<sub>3</sub>)<sub>2</sub>
3) (NH<sub>3</sub>)<sub>2</sub> CO<sub>3</sub>
4) NH<sub>4</sub> CO<sub>3</sub>
Q. Which one of the following is a chemical change?
1) Dissolving sugar in water
2) Melting of ice
3) Crystallization
4) Milk turning sour
Q. Refining of petroleum is carried out using which one of the following techniques?
1) Evaporation
2) Fractional distillation
3) Separating funnel
4) Sublimation
Q. Which one of the following is not a solution?
1) Alloy
2) Milk
3) Air
4) Sugar
