The instrument for measuring the speed of wind is:
(a) Anemometer
(b) Speed meter
(c) Hygrometer
(d) Tachometer
The planet which revolves very slowly around the sun is:
(a) Neptune
(b) Jupiter
(c) Mars
(d) None of these
The planet nearest to the Earth is:
(a) Mercury
(b) Jupiter
(c) Venus
(d) None of these
What do you understand by the disease “Insomnia”?
(a) Inability to sleep
(b) Colour blindness
(c) Depression
(d) None of these
Which of the following is not a chemical reaction?
(a) Burning of a paper
(b) Conversion of water into steam
(c) Digestion of food
(d) Burning of coal
Which of the following is a chemical reaction?
(a) Rusting of iron
(b) Tempering of iron
(c) Bending of iron
(d) Melting of iron
A chronometer measures:
(a) Sound waves
(b) Time
(c) Colour contrast
(d) Water waves
Decibel is a unit used for:
(a) Speed of light
(b) Intensity of sound
(c) Intensity of heat
(d) None of these
The element required for solar energy conversion is:
(a) Silicon
(b) Germanium
(c) Uranium
(d) Selenium
1 metric ton is equal to:
(a) 100 kilograms
(b) 500 kilograms
(c) 1000 kilograms
(d) 10000 kilograms