GATE Questions

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If the price of a product rises, the demand for the substitute product increases.

Jim Corbett National Park is the 1st National Park of India and is a forested wildlife sanctuary in northern India’s Uttarakhand State. Rich in flora and fauna, it’s known for its Bengal tigers.

Glaucoma is usually caused by high pressure on the optic nerve which leads the loss of eye sight.

Enzymes in the body are those which play an important role of breaking down the larger molecules to small and speeds up the chemical reactions.

Ans.
112 × 5 ÷ 14 = 11 + ?
112 × 5 ÷ 14 = 11 + ?
560 ÷ 14 = 11 + ?
40 = 11 + ?
? = 40 - 11 = 29

Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.

Examples of compounds with covalent bonds ::

HCl, CO2, O2,... 

Atoms are composed of three main particles called electrons, protons and neutrons. We know that, the electrons are negatively charged particles whereas protons are positively charged and neutrons have no charge.

Hence, as the number of electrons and protons are equal and they are oppositely charged, the atom will have no charge as their charges cancel each other.