GATE Questions

Q:

Oxidation number of S8?

A) +1 B) -2
C) +2 D) 0
 
Answer & Explanation Answer: D) 0

Explanation:

S8 is an elemental form of sufur. In elemental form it can't be reduced or oxidized. Hence, it oxidation number is zero and thus sulfur is zerovalent here.

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Q:

The law of conservation of energy states that

A) energy can neither be created nor destroyed B) energy can either be created nor destroyed
C) energy can neither be created or destroyed D) energy can either be created or destroyed
 
Answer & Explanation Answer: A) energy can neither be created nor destroyed

Explanation:

The law of conservation of energy is a law of science which states that energy can neither be created nor destroyed - only converted from one form of energy to another.

In 1842, Julius Robert Mayer discovered the Law of Conservation of Energy.

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Q:

Which three components are common to all amino acids?

Answer

Any two amino acids vary structure by the r-group, otherwise all amino acids are in the same structure. All amino acids have in common carboxyl group -COO , amino group -NH3+ and a hydrogen -H and a r-group which are all bonded to a central carbon.

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Q:

Which of these is ATP?

A) 3 Phosphate groups attached to chromosome attached to Adenine B) 3 Phosphate groups attached to a Ribose attached to Adenine
C) 3 Phosphate groups attached to a Ribose attached to Thymine D) None of the above
 
Answer & Explanation Answer: B) 3 Phosphate groups attached to a Ribose attached to Adenine

Explanation:

ATP is a Adenosine Triphosphate.

 

ATP is 3 Phosphate groups attached to a Ribose attached to Adenine.

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Q:

Which one of the following is true of tRNAs?

A) tRNAs are double-stranded. B) There are four types of tRNA.
C) Each tRNA binds a particular amino acid. D) All of the above
 
Answer & Explanation Answer: C) Each tRNA binds a particular amino acid.

Explanation:

tRNA abbreviated as A transfer RNA is an adaptor molecule composed of RNA, typically 76 to 90 nucleotides in length, that serves as the physical link between the mRNA and the amino acid sequence of proteins.

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Q:

Ticks and mites are actually

A) Arachnids B) Insects
C) Myriapods D) Crustaceans
 
Answer & Explanation Answer: A) Arachnids

Explanation:
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Q:

Which is the best definition of activation energy?

A) the energy required to break the bonds of reactant molecules B) the energy required to end a chemical reaction
C) the energy required to bind a substrate to an active site D) the energy required to re-form bonds in product molecules
 
Answer & Explanation Answer: A) the energy required to break the bonds of reactant molecules

Explanation:

Activation energy is a minimum amount of energy that required for the chemical reaction to happen or to take place.

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Q:

Nachiket Mor Committee was for

A) Financial Services B) 4G Scam
C) Spot Fixing in IPL D) None of the above
 
Answer & Explanation Answer: A) Financial Services

Explanation:

Nachiket Mor Committee on Comprehensive Financial Services for Small Businesses and Low Income Households (commonly known as the Nachiket Mor Committee) was an expert committee formed by Raghuram Rajan on 23 September 2013, after he was appointed as the governor of the Reserve Bank of India (RBI). It was headed by Nachiket Mor.

Nachiket_Mor_committee_was_for1566191952.jpg image

 

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