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Find the equation of the line passing through the points P(5,1) and Q(1,−1).

Given, the two points are P(5,1) and Q(1,−1). By the formula of slope of a line (m), when two points are given, we know; m = (y2 -... View Article

Explain oxygen cycle in detail.

The oxygen cycle is a biological process which helps in maintaining the oxygen level by moving through three main spheres of the earth. These... View Article

Express the trigonometric ratios sinA,secA and tanA in terms of cotA.

Sin A: Sin A = 1/cosec A sin A= 1/√(1+cot2A) Sec A: sec A = √(1+tan2A) sec A = √(1+1/cot2A) sec A... View Article

Define the term basicity of an acid. Give the basicity of nitric acid sulphuric acid and phosphoric acid.

The basicity of acid is the number of H+ ions that can be produced by one molecule of acid in aqueous solution. The basicity of Nitric acid... View Article

In respiration, air passes through A. Pharynx → nasal cavity → larynx → trachea bronchi → bronchioles → lungs B. Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles → lungs C. Larynx → nasal cavity’ → pharynx → trachea → lungs D. Larynx → pharynx trachea → lungs

Answer: B. Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles → lungs... View Article

Which of the following is divisible by 3? A. 12 B. 51 C. 81 D. All the above

Answer: D. All the above A number is divisible by 3, if we add all its digits and the resulting is divisible by 3. A. 12 = 1+2 = 3; 3 is... View Article

Fluid part of blood after removal of corpuscles is:

a) Plasma b) Lymph c) Serum d) Vaccine Answer: a) Plasma Explanation: Plasma is the amber-coloured, liquid component of the blood that is... View Article

What happens when PCl5 is heated?

PCl5 decomposes to give PCl3 and Chlorine gas, when heated. Thus, this gives an equilibrium reaction. PCl5 (g) ⇌ PCl3 (g) + Cl2 (g)... View Article

A current loop in a magnetic field: A. can be in equilibrium in one orientation. B. can be in equilibrium in two orientations; both the equilibrium states are unstable. C. can be in equilibrium in two orientations. One stable while the other is unstable. D. experiences a torque where the field is uniform or non-uniform in all orientations.

Answer: C. can be in equilibrium in two orientations. One stable while the other is unstable.... View Article

Use the appropriate conjunction to form a sentence: We reached home. At that moment, the phone rang.

No sooner did we reach home, than the phone rang... View Article

What is dry ice? Why it is called so?

Dry Ice is basically named to solid carbon dioxide (CO2). It is so called because it does not melt into a liquid when we heat it instead it turn... View Article