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The acceleration of a moving body can be found from (A) area under velocity time graph (B) area under distance time graph (C) slope of the velocity time graph (D) slope of distance time graph

Slope of the velocity time graph The acceleration of a moving body can be found from slope of the velocity time graph Hence, the correct option... View Article

A compound microscope has a magnifying power of 100 when the image is formed at infinity. The objective has a focal length of 0.5 cm and the tube length is 6.5 cm. Find the focal length of the eyepiece

For the compound microscope we have Magnifying power, m = 100 Focal length of the objective, f0 = 0.5 cm Tube length, l = 6.5 cm As the image... View Article

State one observation which shows that atom is not indivisible

Chadwick discovered neutral particle present in an atom by bombarding light nuclei such as beryllium with alpha particles. This observation shows... View Article

A locomotive of mass m starts moving so that its velocity varies according to the law v = a√s where a is a constant, and s is the distance covered. Find the total work performed by all the forces which are acting on the locomotive during the first t seconds after the beginning of motion.

Differentiating v(s) with respect to time dv/dt = (a/2√s)ds/dt = (a/2√s)a√s = a2/2 = w (As locomotive is in unidirectional... View Article

Human welfare is the subject of Economics. This statement is associated with which of the following economists? (A) Marshall (B) Pigou (C) Penson (D) All of these

All of these The statement 'Human welfare is the subject of Economics' is associated with Marshall, Pigou and Penson who are termed as welfare... View Article

Complete the following sentence: Every point on the number line corresponds to a ____ number which may be either _ or ____

We know that every point on the number line is real. Further all the real numbers are either rational or irrational Therefore, the three blanks... View Article

The pension of a high court judge is charged to the (A) Consolidated Fund of India (B) Consolidated Fund of the state where he last served (C) Consolidated Funds of the different states where he has served (D) Contingency Fund of India

The pension of a High Court Judge is charged on the Consolidated Fund of India. Therefore, the correct option is (A)... View Article

Which of the following are arranged from smallest unit to largest unit? (A) cm, m, mm, km (B) km, m, cm, mm (C) cm, mm, m, km (D) mm, m, cm, km (E) mm, cm, m, km

1 kilometer = 1000000 millimeter 1 meter = 1000 millimeter 1 centimeter = 10 millimeter Therefore the correct answer is mm, cm, m, km So, the... View Article

The four headed Lion capital from Ashoka’s pillar at ___________ is our National Emblem (A) Sanchi (B) Sarnath (C) Pataliputra (D) Ujjain

Sarnath The National Emblem of India is another version of the Lion Capital of Ashoka at Sarnath, conserved in the Sarnath Museum. It was adopted... View Article

The element with highest electron affinity among the halogens is: (A) F (B) Cl (C) Br (D) I

Cl The amount of energy released when an electron is added to a neutral atom to form an anion is called electron affinity. The more... View Article

Water vascular system is the characteristic of which group of the following? (A) Porifera (B) Gtenophora (C) Echinodermata (D) Chordata

Echinodermata Water vascular system is a characteristic feature of the phylum Echinodermata. The water vascular system is a complex hydraulic... View Article

If a solid is dispersed in a liquid, the colloid is known as:(A) gel(B) sol(C) emulsion(D) none of the above

Answer: (B) sol The liquid state of a colloid solution is called sol. A Solid Sol is a colloidal solution with a Solid as the dispersed phase... View Article

Answer the following: (i) Write the general electronic configuration of halogens in the valence shell

The general electronic configuration of group 17 elements is ns2np5.... View Article

Private Sector Mutual Funds in India were permitted in (A) 1964 (B) 1993 (C) 1994 (D) 2001

Private Sector Mutual Funds in India were permitted in 1993. Therefore, the correct option is (B)... View Article

Exine of pollen grain is made up of (A) Pectocellulose (B) Ligno cellulose (C) Sporopollenin (D) Pollen kit

Sporopollenin The exine of the pollen grain is made up of sporopollenin. This material is highly resistant to high temperature, acids, alkalies,... View Article

On what belief are contingency theories of leadership based? (A) That there is single style of leadership appropriate to all managers (B) That there is no single style of leadership appropriate to all managers (C) That there is no single style of leadership appropriate to all situation (D) None of the above

That there is no single style of leadership appropriate to all managers Hence, the correct option is (B)... View Article

Name the plant hormone responsible for elongation of cells (A) Auxin (B) Gibberellin (C) Abscisic acid (D) Cytokinins

Auxin Auxin means to enlarge or increase, which used widely in the field of agriculture and horticulture. They induce cell division,... View Article

Which of the following are the two key concepts of Darwinian theory of evolution? (A) Genetic drift and mutation (B) Adaptive radiation and homology (C) Mutation and natural selection (D) Branching descent and natural selection

Branching descent and natural selection According to Darwin's theory of evolution, nature selects the most suitable. Fitness is based on the... View Article

Identify the wrong statement in the following Coulomb’s law correctly describes the electric force that (A) binds the electrons of an atom to its nucleus (B) binds protons and neutrons in the nucleus of an atom (C) binds atoms together to form molecules (D) binds atoms and molecules to form solids

binds protons and neutrons in the nucleus of an atom Since the Coulomb's force applies between two charged bodies and the neutrons doesn't have... View Article

Classify each of the following as being either a p-type or an n-type semiconductor (i) Ge doped with In (ii) B doped with Si

(i) Ge is a 14th group element and In is a 13th group element. An electron deficit hole created, when 14th group element is doped with 13th group... View Article

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