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Q:

Derivative of sinx by first principle?

A) -sinx	B) -cosx
C) cosx	D) sinx

Answer & Explanation Answer: C) cosx

Explanation:

Screenshot_(1)1519127168.png image

Thus, the derivative of sinx by first principle is cosx.

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Filed Under: Simplification
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Q:

Which liquid is the most viscous?

A) Water	B) Diesel
C) Milk	D) Oil

Answer & Explanation Answer: D) Oil

Explanation:

Here Oil is the most viscous liquid.

The liquid with the most intermolecular force is high viscous. viscosity is how smoothly a liquid flows and how hardly the liquid flows it is highly viscous.

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Filed Under: Physics
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Q:

What is a process whereby an Ecosystem can renew itself?

A) Succession	B) Reconstruction
C) Cleansing	D) Purification

Answer & Explanation Answer: A) Succession

Explanation:

The process which wherein an Ecosystem may renew itself is known as Ecological Succession.

The time scale may be decades or a million of years after a mass extinction.

It may be achieve over a period of time.

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Filed Under: General Awareness
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Q:

The Study of Universe is called

A) Universology	B) Cosmetology
C) Petology	D) Cosmology

Answer & Explanation Answer: D) Cosmology

Explanation:

Cosmology is the scientific study of the large scale properties of the universe as a whole. It endeavors to use the scientific method to understand the origin, evolution and ultimate fate of the entire Universe.

Depending on the outcome of the observations, the theories will need to be abandoned, revised or extended to accommodate the data. The prevailing theory about the origin and evolution of our Universe is the so-called Big Bang theory.

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Filed Under: General Science
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Q:

Which of these illustrates the Secondary Structure of a Protein?

chemistry1519110232.jpg image

A) A	B) B
C) C	D) D

Answer & Explanation Answer: B) B

Explanation:

The Secondary Structure of a Protein is option B)

The Secondary Structure of a Protein results from Hydrogen Bonds.

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Filed Under: Chemistry
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Q:

125 over 1000 in Simplest Form?

A) 2/9	B) 1/8
C) 3/8	D) 4/7

Answer & Explanation Answer: B) 1/8

Explanation:

125 over 1000 in Simplest Form means $\frac{125}{1000}$ in its simple fraction form.

Now, to get the simplest form of 125/1000, find the HCF or GCD of both numerator and denominator i.e, 125 and 1000.

HCF of 125, 1000 = 125

Then, divide both numerator and denominator by 125

i.e, $\frac{\frac{125}{125}}{\frac{1000}{125}} = \frac{1}{8}$

Hence, $\frac{1}{8}$ is the simplest form of 125 over 1000.

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Filed Under: Decimal Fractions
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Q:

Solve if you are Genius?

27973011_1559273064179792_7533515893130149894_n1519041289.jpg image

A) 36	B) 42
C) 48	D) 54

Answer & Explanation Answer: D) 54

Explanation:

Here the given Number Puzzle follows a pattern that, Sum of the numbers on the corners on the two squares is same and is equal to 54.

i.e,

13 + 15 + 14 + 12 = 54

and

8 + 22 + 9 + 15 = 54

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Filed Under: Number Puzzles
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Q:

The average weight of 45 passengers in a bus is 52 kg. 5 of them whose average weight is 48 kg leave the bus and other 5 passengers whose average weight is 54 kg join the bus at the same stop. What is the new average weight of the bus?

A) 54.21 kgs	B) 51.07 kgs
C) 52.66 kgs	D) 53.45 kgs

Answer & Explanation Answer: C) 52.66 kgs

Explanation:

Given total number of passengers in the bus = 45

First average weight of 45 passengers = 52 kgs

Average weight of 5 passengers who leave bus = 48

Average weight of 5 passengers who joined the bus = 54

Therefore, the net average weight of the bus is given by

$= \frac{45 x 52 - (5 x 48) + (5 x 54)}{45} = \frac{2370}{45} = \frac{158}{3} = 52.66 kgs .$

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Filed Under: Average
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