Heating element of an electric heater is made up of___________? April 15, 2025 by admin A. Tungsten B. Graphite C. Chromium D. Nichrome
In an oil lamp, the oil rises up in the wick due to? April 15, 2025 by admin A. Capillary action B. Atmospheric pressure C. Viscosity of oil D. Change in temperature
Why are soft drink made with chilled water rather than water at room temperature? April 15, 2025 by admin A. Ingredients dissolve better in chilled water B. Chilled water enhances the taste C. Chilled water attracts more carbon dioxide D. Chilled water is more hygienic
Coke is made by heating coal in the absence of air at__________? April 15, 2025 by admin A. 700 °C B. 900 °C C. 1300 °C D. 1700 °C
As the temperature of ice rises, the ice melts and its density? April 15, 2025 by admin A. Decreases B. Remain constant C. Increases D. Increases upto 10C
Nitrogen occurs in plant and animals in the form of ___________? April 15, 2025 by admin A. Minerals B. Fats C. Carbohydrates D. Proteins
Air contains volume of carbon dioxide approximately? April 15, 2025 by admin A. 3% B. 33% C. 0.3% D. 0.03%
The gases which are used by drivers as an artificial atmosphere are helium and_____________? April 15, 2025 by admin A. Nitrogen B. Oxygen C. Neon D. Carbon monoxide
The second most abundant metal found in the earth’s crust is_____________? April 15, 2025 by admin A. Silicon B. Aluminium C. Calcium D. Sodium
