Lux is a unit of __________?
Lux is a unit of __________?
A. Luminous Flux
B. Illumination
C. Luminous Intensity
D. Focus
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LPG consists of mainly:___________?
LPG consists of mainly:___________?A. Methane, Ethane and Hexane
B. Ethane, Hexane and Nonane
C. Methane, Hexane and Nonane
D. Methane, Butane and PropanePVC is obtained by the polymerisation of?
PVC is obtained by the polymerisation of?A. Propane
B. Vinyl chloride
C. Styrene
D. None of theseWhich layer of the atmosphere reflects radio waves back to the earth’s surface?
Which layer of the atmosphere reflects radio waves back to the earth’s surface?A. Troposphere
B. Stratosphere
C. Ozone layer
D. IonosphereA camera uses a __________ to form an image.
A camera uses a __________ to form an image.A. convex lens
B. concave lens
C. condenser lens
D. none of theseWhich of the following is used as a lubricant?
Which of the following is used as a lubricant?A. Graphite
B. Silica
C. Diamond
D. Iron oxideGraphite is best suited for lubrication in air. It is a mineral made of loosely bonded sheets of carbon atoms, giving it a slippery texture that makes it a very effective lubricant.
Mohs’ Scale” is used to indicate the_________?
Mohs’ Scale” is used to indicate the_________?A. Degree of hardness of minerals
B. Degree of viscosity of a liquid
C. Degree of elasticity of a material
D. Degree of brittleness of a substance