General Science & Ability MCQs 2007

For sending sound waves at a large distance, which waves are used?
A) Infrared waves
B) Radio waves
C) Light waves
D) None of these

The acid used in a car battery is:
A) Hydrochloric acid
B) Nitric acid
C) Sulphuric acid
D) None of these

As temperature rises, the conductivity of metals:
A) Decreases
B) Increases
C) Remains unchanged
D) None of these

The reactions taking place at the anode and cathode are respectively:
A) Oxidation, reduction
B) Reduction, oxidation
C) Reduction, hydrolysis
D) None of these

During electrolysis, metals are deposited at the cathode because the cathode:
A) Supplies electrons
B) Withdraws electrons
C) Undergoes oxidation
D) None of these

Which of the following gases is used in fire extinguishers?
A) Oxygen
B) Hydrogen
C) Carbon dioxide
D) None of these

Stains of rust from iron on cloth can be removed by:
A) Hydrogen peroxide
B) Alcohol
C) Oxalic acid
D) None of these

In which country is alcohol used as a fuel for vehicles?
A) USA
B) Brazil
C) Japan
D) Germany

The device used for the measurement of current, voltage, and resistance is:
A) AVO meter
B) Galvanometer
C) Ammeter
D) Ohmmeter

Silicon is a:
A) Semiconductor
B) Insulator
C) Superconductor
D) Conductor