Question: Plotting of the vibrations caused by an earthquake on a paper is called:

• 1. Seismograph
• 2. Photograph
• 3. Earthograph
• 4. None of these

Question: The substance which allows electric current to flow through it is called:

• 1. Insulators
• 2. Inductors
• 3. Conductors
• 4. None of these

Question: We can change the direction of force by____?

• 1. Gears and Pulleys
• 2. Axle
• 3. Gears
• 4. Pulleys

Question: Metals used in voltaic cell are:

• 1. Zinc and lead
• 2. Zinc and copper
• 3. Zinc and lead
• 4. Carbon and nickel

Question: In a fluorescent tube which of the following components are found?

• 1. Argon and Carbon dioxide
• 2. Helium and Oxygen
• 3. Mercury vapor
• 4. Argonne and neon

Question: For artificial insemination the semen of a bull should be stored in:

• 1. Ice
• 2. Liquid nitrogen
• 3. Cold water
• 4. Liquid Oxygen

Question: Carbon makes which of Earth's Hard Element ?

• 1. Gold
• 2. Iron
• 3. Diamond
• 4. Stone

Question: Which of the following is useful in the chemistry of photography?

• 1. Aluminium hydroxide
• 2. Silver bromide
• 3. Sodium chloride
• 4. Potassium nitrate

Question: The process by which metal surface is coated with thin layer of zinc is called:

• 1. Vulcanising
• 2. Electroplating
• 3. None of these
• 4. Galvanizing

Question: The substance generally used in the tip of safety match stick is:

• 1. Yellow phosphorus
• 2. Antimony trisulphide
• 3. Red phosphorus
• 4. Sodium