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Most abundant alkali metal in the earth crust is

Sodium is the most abundant alkali metal in the earth's crust. Sodium and potassium are the seventh and eighth most abundant elements by weight... View Article

Name the two main associations that were the precursors of the Indian National Congress

The Indian Association (1876) and the Indian National Conference (1883) are the two main associations that were the precursors of the Indian... View Article

Commercial bath sponges are called as (A) Euspongia (B) Spongilla (C) Euplectella (D) Cliona

Euspongia Euspongia is a commercial used sponge, commonly known as bath sponge. It is found throughout the Mediterranean Sea. It is a... View Article

Find the length of the diagonal of a rectangle whose length is 15 cm and breadth is 8 cm

Let ABCD be a rectangle with AB = 15 cm and BC = 8 cm Diagonal is AC We know that, in a rectangle all the angles are 900 Hence, By Pythagoras... View Article

Find the height of the cuboid whose length, breadth and volume are 35 cm, 15 cm and 14175 cm^3 respectively

Given Length of the cuboid = 35 cm Breadth of the cuboid = 15 cm Volume of the cuboid = 14175 cm3 We know that, Volume = Length x... View Article

Form the greatest and smallest numbers using the digits 5, 2, 9, 7 (each digit is used only once). What is the difference between the two numbers formed? (A) 6853 (B) 7173 (C) 7359 (D) 8659

Given digits are 5, 2, 9, 7 The greatest number is obtained by arranging the digits in descending order as shown below Greatest number = 9752 The... View Article

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

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