GATE Questions

Q:

Elastomers can extend upto

A) ten times their original dimensions B) seven times their original dimensions
C) five times their original dimensions D) three times their original dimensions
 
Answer & Explanation Answer: B) seven times their original dimensions

Explanation:

An elastomer is a polymer with viscoelasticity which have low youngs modulus with weak intermolecular forces when compared with other materials.

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Filed Under: General Science
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Q:

445 of 229.79 = ? of 2398.51

A) 23/50 B) 36/49
C) 33/41 D) 29/47
 
Answer & Explanation Answer: A) 23/50

Explanation:

Given 

445 of 229.79 = ? of 2398.51

 

245 x 230 = ? x 240024 x 46 = ? x 2400? = 46/100 ? = 2350

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Filed Under: Percentage
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4 2315
Q:

Which of the following atoms has the largest radius?

A) Br B) K
C) Na D) Cl
 
Answer & Explanation Answer: B) K

Explanation:

For neutral atoms, the periodic trends in atomic size can be described like this

Atomic size decreases when going from left to right across a period,
Atomic size increases when going from top to bottom down a group.

 

Let's use these trends to try and figure out which atom would have the largest radius.

If you look at elements that are located in the same group, potassium will have a larger atomic radius when compared with sodium. Likewise, bromine will have a larger atomic radius when compared with chlorine.

Now focus on potassium and bromine. Since potassium is located at the start of period 3, and bromine at the end of the same period, potassium will have a larger atomic radius than bromine, and thus the largest atomic radius of the four given atoms.

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Filed Under: Chemistry
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3 2314
Q:

If the age of father is 4 years greater than the mother and 28 years greater than the son,then what is the age of the father?

which one should be used to calculate the age ?

A) mother/son = Non-prime number
B) mother/son = Perfect square number

A) only A alone is sufficient B) only B alone is sufficient
C) both A and B are required D) Cannot be answered
 
Answer & Explanation Answer: B) only B alone is sufficient

Explanation:

For the given problem there are three possiblities.
Father's age can be = 36, 31, 29
Mother's age = 32, 27, 25
Son's age = 8, 3, 1.

By using only B it can be calculated.

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2 2312
Q:

Which of the following is a polymer?

A) Glycerol B) Amino acid
C) Nucleic acid D) Fatty acid
 
Answer & Explanation Answer: C) Nucleic acid

Explanation:

Nucleic acid is a polymer among the given options.

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Filed Under: Chemistry
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1 2307
Q:

Where does translation occur?

A) Nucleus B) Ribosomes
C) Cytoplasm D) mitochondrion
 
Answer & Explanation Answer: C) Cytoplasm

Explanation:

Right after that, the mRNA enters the cytoplasm through nuclear pores. There, it could be translated into proteins by ribosomes. This process is called translation.

 

Translation occurs in the cytoplasm whereas transcription occurs in the nucleus.

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Filed Under: Biology
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5 2306
Q:

Which of the following is true of enzymes?

A) Enzymes lowers the activation energy for the chemical reaction B) Enzymes speed up the rate of a chemical reaction
C) Both A & B D) Neither A nor B
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Enzymes are macromolecular biological catalysts. Enzymes accelerate chemical reactions. The molecules upon which enzymes may act are called substrates and the enzyme converts the substrates into different molecules known as products.

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Filed Under: Biology
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5 2304
Q:

Forces of attraction limit the motion of particles most in solids.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

We know that, solids have definite shapes and definite volumes, whereas liquids have definite volumes but indefinite shapes and coming to gases it has indefinite volumes and indefinite shapes.


 


Hence, only in solids, the forces of attraction limit the motion of particles.

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Subject: Physics
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1 2303