A. it has squint eyes B. it has light bulbs in its eyes provided by nature C. it produces infrasonic sounds D. it has large eyes with orbs directed forward, giving it binocular sight Because of their eyes, an owl can see much better in the dark than we can. Owls have very large eyes … Read more
A. electromagnetic image making B. magnetic image making C. thermal image making D. electrostatic image making All Electrostatic Copiers work under the premise that a charge of electricity is placed on an Image Drum which has the ability to retain the electric charge much like a capacitor holds its charge but with the ability to … Read more
A. light waves on it B. microwaves on it C. radio waves on it D. ultra high frequency waves on it Radar, which stands for radio detection and ranging, is a system that uses reflected radio waves to detect objects and measure their distance and speed. For example, police use radar to calculate the speed … Read more
A. 100 B. 400 C. 1000 D. 4000
A. Sodium nitrate B. Zinc sulfate C. Sulphuric acid D. Calcium carbonate Calcium carbonate (also known as chalk), mined as calcite, is the most commonly used filler for PVC.
A. Blood B. Lungs C. Kidney D. pancreas Lung, kidney, and pancreas are organs involved in various physiological processes of the body. Blood, on the other hand, is a connective tissue. It is considered so because of the presence of a matrix. So, the correct answer is ‘Blood’.
A. Methane B. Nitrous oxide C. Carbon dioxide D. Hydrogen Greenhouse effect – Gases that trap heat in the earth’s atmosphere are known as Greenhouse Gases. Greenhouse Gases are Carbon Dioxide, Methane, Nitrous Oxide (N2O), Water Vapour, and Chlorofluorocarbons. Greenhouse Gases are capable of trapping the out-going infrared radiation from the earth’s surface thereby causing … Read more
A. oxygen and hydrogen B. oxygen, hydrogen, acetylene and nitrogen C. oxygen, acetylene and argon D. oxygen and acetylene
A. Medicine B. Fertilizer C. Salt D. Glass
A. Copper B. Chromium C. Lead D. Cadmium