Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

Industries should regularly check (1)/ if their machines are emitting (2)/ smoke within permission limits. (3)/ No error (4).

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: C) 3

Explanation:

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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

X marks the spot

A) A very popular place	B) Not to tell others of a fantastic discovery
C) The exact location	D) A secret hideout

Answer & Explanation Answer: C) The exact location

Explanation:

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Q:

A cube is inscribed in a sphere. A right circular cylinder is within the cube touching all the vertical faces. A right circular once is inside the cylinder. Their heights are same and the diameter of the cone is equal to that of the cylinder.

Consider the following statements:

1) The surface area of the sphere is √5 Times the curved surface area of the cone.

2) The surface area of the cube is equal to the curved surface area of the cylinder. Which of the above statements is/are correct?

A) 1 only	B) 2 only
C) Both 1 and 2	D) Neither 1 nor 2

Answer & Explanation Answer: D) Neither 1 nor 2

Explanation:

The top view of the given assembly will look like the figure above

Outermost is the sphere. Inside that there is a cube and within that there is a cone and cylinder with same radius.

Here side of cube = a

Diameter of Sphere = body diagnol = √3 a

Radius of sphere = √3 a/2 =r1

Height of Cylinder = Height of cone = side of cube = a =h

Radius of cylinder = Radius of cone = side of cube/2 = a/2 =r2(as shown in the figure)

Thus neither 1 nor 2 are true

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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

As it was his first date,(A)/he dressed(B)/himself in best suit.(C)/No error(D)

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

Answer & Explanation Answer: C) C

Explanation:

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Q:

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best
expresses the same sentence in Passive/Active voice.
The cleaners sweep the streets everyday.

A) Sweeping of the steers everyday has been done by the cleaners.	B) Everyday the cleaners have been sweeping the streets.
C) The streets are swept by the cleaners everyday.	D) The streets have had been swept by the cleaners everyday.

Answer & Explanation Answer: C) The streets are swept by the cleaners everyday.

Explanation:

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Q:

Most viruses that infect plants possess

A) single-stranded DNA	B) single-stranded RNA
C) double-stranded DNA and RNA	D) double-stranded RNA only

Answer & Explanation Answer: B) single-stranded RNA

Explanation:

Generally viruses that infect plants have single stranded RNA. Viruses infecting animals have double stranded RNA or DNA. Viruses which infect bacteria have double stranded DNA.

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Filed Under: Biology
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Q:

Which of the following increases the rate of heart beat?

A) Peripheral nerves	B) Sympathetic nerves
C) Parasympathetic nerves	D) Cranial nerves

Answer & Explanation Answer: B) Sympathetic nerves

Explanation:

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Q:

If sec -7π/4 = x, then the value of x is

A) √2	B) -√2
C) -1/√3	D) -1

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