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16 December 2019: The Hindu Analysis

UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 16th December 2019. Important news and views... View Article

Golden Revolution & National Horticulture Mission

In this article you will know about the Golden Revolution, meaning and importance of Golden Revolution in India, the products to which the golden... View Article

Green Revolution [Latest News]

The Green Revolution (a term used for rapid increases in wheat and rice yields in developing countries brought about by improved varieties... View Article

Pink Revolution – An Overview

The term Pink Revolution denotes the revolution in the technologies used in the poultry and meat processing sector in the country. Durgesh Patel... View Article

16 Dec 2019: UPSC Exam Comprehensive News Analysis

CNA 16 Dec 2019:- Download PDF Here TABLE OF CONTENTS A. GS 1 Related B. GS 2 Related HEALTH 1. ‘Maternity scheme exclusionary, need benefits for... View Article

Which separation techniques will you apply for the separation of the following? (1) Sodium chloride from its solution in water. (2) Ammonium chloride from a mixture containing sodium chloride and ammonium chloride. (3) Small pieces of metal in the engine oil of a car. (4) Different pigments from an extract of flower petals. (5) Butter from curd. (6) Oil from water. (7) Tea leaves from tea.(8) Iron pins from sand. (9) Wheat grains from husk. (10) Fine mud particles suspended in water

Answer: The substances that we see are not in their pure form. They are typically a mixture of two substances or more. Surprisingly, mixtures... View Article

Which part of the digestive canal is involved in (i) absorption of food (ii) chewing of food (iii) killing of bacteria (iv) complete digestion of food (v) formation of faeces

(i) Absorption of food in small intestine. Small Intestine is a thin and long tube-like structure measuring about 9 to 10 feet long and also the... View Article

Which one of the following does not describe Nitrogen? (a) Nitrogen is a chemical element with atomic number 7 (b) Nitrogen is a nonmetal with an electronegativity of 3.04 (c) Nitrogen is very high reactive due to high bond dissociation energy (d) The triple bonds in nitrogen atom makes it difficult to convert Nitrogen into other compounds

Answer: (c) Nitrogen is very high reactive due to high bond dissociation energy. This statement is wrong. Due to the presence of a triple bond... View Article

Which of the following statements are true (T) and which are false(F):

False Reason: Zero is not a natural number. It is a whole number. False Reason:400 is the successor of 399 but not the predecessor of 399.... View Article

Which of the following plants have you seen? Of those that you have seen, which ones have flowers? Grass, maize, wheat, chilli, tomato, tulsi, pipal, shisham, banyan, mango, jamun, guava pomegranate, papaya, banana, lemon, sugarcane, potato, groundnut?

We have seen the following plants: Grass, maize, wheat, chilli, tomato, tulsi, pipal, banyan, mango, Jamun, guava, papaya, banana, lemon,... View Article

Which of the following is not true about expiration? (a) Diaphragm contracts during expiration (b)The increased size of the thoracic cavity decreases the pressure inside (c)Expiration begins when inspiration ends (d) Expiration can either be voluntary or involuntary.

Diaphragm contracts during expiration. The diaphragm becomes contracts during the process of inspiration and relaxes during expiration.... View Article

Which of the following correctly describes the magnetic field near a long straight wire? (A) The field consists of straight lines perpendicular to the wire (B) The field consists of straight lines parallel to the wire (C) The field consists of radial lines originating from the wire (D) The field consists of concentric circles centered on the wire

Answer: (D) The field consists of concentric circles centered on the wire A magnetic field is an invisible space that surrounds a magnet.... View Article

Which of the following best describes a tetrahedral void? a)combination of triangular voids. b)space within a cube. c)unoccupied space between 4 spheres arranged in a terahedron. d)space unoccupied between 6 spheres.

Option (c) unoccupied space between 4 spheres arranged in a tetrahedron The unit cells of a crystal lattice is a cube. So when these atoms or... View Article

Where will the hour hand of a clock stop if it starts: (a) From 6 and turns through 1 right angle? (b) From 8 and turns through 2 rightangles? (c) From 10 and turns through 3 rightangles? (d) From 7 and turns through 2 straightangles?

We need to find where will the hour hand of a clock stop for the given set of questions Consider clock to be 360° and the clock marks up to 12... View Article

Where will the hand of a clock stop if it: (a) starts at 12 and make 1/2 of a revolution, clockwise? (b) starts at 2 and makes 1/2 of a revolution, clockwise? (c) starts at 5 and makes 1/2 of a revolution, clockwise? (d) starts at 5 and makes 3/4 of a revolution, clockwise?

In 1 complete clockwise revolution, the hand of a clock will rotate by 3600 (a) When the hand of a clock starts at 12 and makes 1/2 of a... View Article

When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?

An echo is heard when the time for the reflected sound is heard after 0.1 s Time Taken= Total Distance / Velocity On a hotter day, the velocity... View Article

When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen? Which law of chemical combinations will govern your answer?

When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. 3.0 g of carbon combines with 8.0 g of oxygen to give... View Article

Two persons manage to push a motorcar of mass 1200 kg at a uniform velocity along a level road. The same motorcar can be pushed by three persons to produce an acceleration of 0.2 m s-2. With what force does each person push the motorcar? (Assume that all persons push the motorcar with the same muscular effort)

Given Mass of the motor car = 1200 kg Only two persons manage to push the car. Hence, the acceleration acquired by the car is given by the... View Article

The kinetic energy of an object of mass, m moving with a velocity of 5 m s^-1 is 25 J. What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times?

Answer: We know that K.E = Kinetic energy attain by object m = Mass of the object v = Velocity of the object Given parameters: K.E. of the... View Article

The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object? Option A: Between the principal focus and the centre of curvature Option B: At the centre of curvature Option C: Beyond the centre of curvature Option D: Between the pole of the mirror and its principal focus.

Correct Option: D Solution: Between the pole of the mirror and its principal focus. A concave mirror has a reflective surface that is curved... View Article

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