Water is a highly effective coolant for a car engine because _________
(A) Water is good conductor of heat
(B) Water has very high specific heat capacity
(C) Water boils at a comparatively high temperature
(D) Evaporation of water produces lot of cooling
A train goes past a railway station at a high speed A young boy standing on the edge of the platform is likely to __________
(A) Remain unaffected
(B) Fall away from the train
(C) Fall towards the train
(D) Fall away from or towards the train depending upon the speed
Which one of the following sets of color combinations is added in color vision in TV
(A) Red, green and blue
(B) Orange, back and violet
(C) White. red and yellow
(D) Yellow, green and blue
A Fahrenheit thermometer indicates a temperature of ‘ 14°F its corresponding reading on the Celsius scale will be _________
(A) – 2O °C
(B) – 10 °C
(C) + 10 °C
(D) + 20 °C
Lead ball falls through water more slowly than through air because __________
(A) The value of âgâ is less in water
(B) Density of air is less than that of water
(C) Of the viscous force in water
(D) Of The surface tension of water
The field of specialization of famous Muslim scientist Abu Usman Aljahiz was
(A) Botany
(B) Zoology
(C) Astronomy
(D) None
Who proposed this concept (All motion is relative)
(A) Albert Einstein
(B) John Kepler
(C) Galileo Galilie
(D) None
An instrument to detect the purity of milk is____________
(A) Lactometer
(B) Hygrometer
(C) Manometer
(D) Sonometer