Everyday Science MCQS
What is the gas that humans breathe?
Carbon monoxide
Nitrogen
Oxygen
Carbon dioxide
The blue colour of the clear sky is due to –
Dispersion of light
Refraction of light
Diffraction of light
Reflection of light
Calculating machine is associated with
Newton
Franklin
None of these
Pascal
Which instrument is used to measure the refractive index of a substance?
Refrectometer
Rain gauge
Radiometer
Ombrometer
Which of the following is neutral:
Diethyl amine
Iodine
Baking soda
Potassium chloride
A reduction of 20% in the price of rice enables a person to buy 3.5 kg more rice for Rs. 385. The original price of rice par kg is?
Rs.22.5
Rs. 20
Rs. 27.5
Rs. 25
The principle underlying a microwave oven is
Heat for the microwaves are the same
Microwaves vibrate the water molecules in food thereby generating heat
Not Known, since cooking with mi8crowaves are discovered accidentally
Heat generation by nuclear power
A sum of money at simple interest double in 10 years. In how many years will it amount to 4 time it self?
35 years
75 years
30 years
25 years
What is the heaviest of the naturally occurring Noble gases?
Argon
helium
Radon
Xenon
Which instrument for measuring solar radiation we use?
Odometer
Pyrheliometer
Potometer
Periscope
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