# Archives

## 20 May 2020: The Hindu Analysis

UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of â€˜The Hinduâ€™ dated 20th May 2020. Important news and views to... View Article

## Economy This Week (6th Apr to 19th Apr 2020)

Economy is an important part of theÂ UPSC prelimsÂ and mains exams; this series titled â€˜Economy This Weekâ€™ has been initiated to address the need... View Article

## 20 May 2020: UPSC Exam Comprehensive News Analysis

20 May 2020 CNA:- Download PDF Here TABLE OF CONTENTS A. GS 1 Related GEOGRAPHY 1. 3 lakh evacuated as Amphan hurtles towards Bengal coast B. GS... View Article

## Economy This Week (23rd Mar to 5th Apr 2020)

Economy is an important part of theÂ UPSC prelimsÂ and mains exams; this series titled â€˜Economy This Weekâ€™ has been initiated to address the need... View Article

## State Newton’s second law of motion and shown that the first law of motion can be mathematically started from the Newton’s seconds law.

Answer: Newtonâ€™s second law of motion can be stated as the acceleration of an object as produced by a net force is directly proportional to the... View Article

## Explain the process of making yarn from fiber.

Answer: The spinning process will produce the yarn from the fiber. Fibers are drawn and twisted from the cotton mass which brings the fibers... View Article

## Calculate the median from the following data:

Marks 0 - 10 10 - 30 30 - 60 60 - 80 80 - 90 Number of students 5 15 30 8 2 Answer: First, prepare the cumulative frequency table:... View Article

## Chromosomes are made up of (1) DNA only (2) Protein only (3) DNA and prottein (4) RNA only

Answer: (3) Chromosomes are thread-like structures woven together. Each chromosome is made of proteins and a single molecule of deoxyribonucleic... View Article

## Photolysis of water is caused by (1) PS – I (2) PS – II (3) PS – 1 and PS – II (4) None of the above

Answer: (2)Â PS - II Photolysis of water in the presence of sunlight is the breakdown of the water molecule into hydrogen and oxygen. During the... View Article

## Number of prime numbers from 1 to 50 are (1) 18 (2) 12 (3) 15 (4) 20

Answer: (3) 15 Prime numbers are the numbers with two factors, 1 and the number itself. Prime numbers between 1 to 50 are listed below,... View Article

## Two years ago, father was three times as old as his son and two years hence, twice his age will be equal to five times that of his son. Find their presents ages.

Answer: Let us consider Son's age = X Two years ago son's age = X - 2 His Father's age at that time = 3(X - 2) Present age of Father = 3X -... View Article

## Why does sun appear reddish early in the morning? Will this phenomenon be observed by an astronaut on the moon? Give reason to justify your answer?

Answer: During the sunrise the sun is set close to the Earth's horizon, and therefore light travels a longer distance through the atmosphere of... View Article

## Calculate the mass of 1 atom of nitrogen.

Answer: The molar mass of a compound defines the mass of 1 mole of that particular substance and the number of grams per mole of a compound. In... View Article

## Which metals is the best conductors of electricity (1) Nickel (2) Silver (3) Gold (4) Sodium

Answer: (2) The metals are said to be good conductors of electricity if they allow electricity to flow through them easily. An electrical... View Article

## Muscular force can (1) Change the state of motion of an object (2) Change the shape of an object (3) Both A and B (4) Neither A and B

Answer: (3) Muscular force is the force produced by the use of muscles. Muscular force occurs as a result of contraction of the muscle which... View Article

## Epiphysis and diaphysis of bone is (1) End and shaft of long bone respectively (2) Shaft and end of long chain respectively (3) Head and neck of long bone (4) Spongy bone only

Answer: (1) Diaphysis is a long bone 's middle part or shaft, consisting of cortical tissue. It typically includes bone marrow and fat. This is... View Article

## Assimilatory (Photosynthetic) roots a characterisct of (1) Trapa and Tinospara (2) Taeniophyllum and Podostermon (3) Both correct (4) None of these

Answer: (3) The root is an underground part of the plant that absorbs water and minerals from the soil and anchors the plant firmly.Â In some... View Article

## STH (somatotropic hormone) is also known as (1) TSH (2) LTH (4) ADH (4) GH

Answer: (4) A somatotropic hormone is also known as Growth hormone. Growth hormone (GH) is a peptide hormone produced by the pituitary gland,... View Article

## Molarity is defined as : (1) The number of moles of solute dissolved in 1 dm3 of the solution (2) The number of moles of solute dissolved in 1 kg of solvent (3) The number of moles of solute dissolved in 1 dm3 of the solvent (4) The number of moles of solute dissolved in 100 mL of solvent

Answer: (1) Molarity of a given solution which means concentration of the solution. It is defined as the total number of moles of solute per... View Article