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27 March 2020: The Hindu Analysis

UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 27th March 2020. Important news and views to... View Article

Aditya has built a cubical water tank with lid for his house with each outer edge equal to 1.5m. He gets the outer surface of the tank including the base, covered with square tiles of side 25cm. Find how much he would spend on tiles if the cost of tile is Rs 480 per dozen?

Given, The edge of the tank = 1.5m = 150cm Cost of 12 tiles = 480 Then, Surface area of the tank = 5 x 1502 Area of each title = 252... View Article

Which is the largest bone in human body? Which is the largest planet in our solar system?

Answer: The largest bone in the human body is the femur, the thighbone. It is the largest, longest, and strongest bone in the human body.... View Article

The Colour Of The Sky Is Blue. Why?

The colour of the sky during the day-time is blue because the molecules in the air scatter blue light more than the red light because the... View Article

Find 5 Rational Numbers Between -1 And 0

To find 5 rational numbers between the two given integers, we need to multiply the number by Therefore, we get Therefore, 5 rational... View Article

Find the value of c in a triangle if the semi perimeter is 13 and the values of a and b are 8 and 7 respectively.

Given, Semi perimeter of triangle, S = 13 a = 8 b = 7 c = ? We know that semi perimeter of triangle is: a + b + c = 2S 8 + 7 + c = 2 x... View Article

A car can reach a certain place in 12 hours at a speed of 60 km per hour. By how much should the speed increased so that it completely the journey in 10 hours?

Given, Speed of the car = 60km/hr Time taken by the car = 12 hours Distance to be travelled = (60 x 12) km = 720km Therefore, the speed to be... View Article

Select The Correct Option For Most Meta Directing Group

Select the correct option for the most meta directing group: a) NO2 b) OCH3 c) CHO d) CONH2 The correct option is a) NO2 Meta directors... View Article

What Is Hemorrhage?

Hemorrhage is also known as bleeding and it means the loss of blood. When it happens inside the body it is known as internal bleeding and... View Article

A stone is dropped from a tower at a height of h. Another stone is thrown at a height of 4h. Determine the time at which both the stones meet.

S1 = S2 = S1 + S2 = h 4h = u = ut = h = h t =... View Article

Name the zone of parenchyma which is present at the centre of the sunflower stem.

The stem of the sunflower is a dicot stem. The three regions of the stem are: a) Epidermis b) Cortex c) Stele The parenchyma is present in... View Article

What is the rancidity?

Rancidity is defined as a state of food in which the food becomes undesirable. Most of the times rancidity is used for explaining the oxygen... View Article

Difference between short-circuit and overloading

Answer: The difference between short circuit and overload are tabulated below. Short circuit Overload Short circuit occurs when there is a... View Article

90%acid solution (90%pure acid &10%water) and 97% acid solution are mixed to obtain 21litres of 95% acid solution. How many litres of each solution are mixed

Consider the solutions to be A and B respectively Let X litres of A be mixed with Y litres of B Given that, X + Y = 21... View Article

Explain why the aqueous solution of sodium carbonate is alkaline.

When sodium carbonate is dissolved in water it gets hydrolyzed and forms a weak acid, carbonic acid, and a strong base: sodium hydroxide.... View Article

AOCB is a quadrilateral in circle with centre O.

Given, We know that the angle subtended by the chord on the major area is half of the subtended on center Therefore, It is given that... View Article

Solve: X/2 + X/4= 1/8

Given, Multiply by 4 on both the sides, we get ⇒ ⇒ 2x + x = 1/2 ⇒ 3x = 1/2 ⇒ x = 1/6... View Article

A man sold an article for rs 495 and gain 10% on it find the cost price

Given, SP = 495 Gain = 10% Substituting the values in the above equation, we get CP = (100 ×495)/(100 + 10) CP = (49500)/110 CP = 450... View Article

A small bulb has a resistance of 2 ohm when it is cold. It draws 0.4 ampere current from a source of4V and then starts glowing. Calculate the resistance when it is glowing

Answer: Given, Resistance (R cold) = 2 Ohm Current (I) = 0.4 Ampere Voltage (V) = 4V Let us calculate the resistance when it is glowing by... View Article

Definition of corrosion and rancidity with example

Answer: (a) Corrosion Corrosion is defined as the process in which metal with atmospheric moisture and chemicals result in the formation of... View Article

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