CAT Questions

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:

Which one of the following factors contributes to hypertension? 

A) A vigorous exercise regimen B) A diet that lacks protein
C) A high-fat diet D) A lack of sleep
 
Answer & Explanation Answer: C) A high-fat diet

Explanation:

In the given options, a high-fat diet is the only factor that contributes to hypertension.

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Q:

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case noimprovement is needed, select "no improvement".

A neem tree grew as a bonus on the side, raising its head high as if it wants (will peep) into my bedroom

A) peep B) peeped
C) to peep D) no improvement
 
Answer & Explanation Answer: C) to peep

Explanation:
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Q:

IQTA system abolished by

A) Illtumish B) Bin Tughluq
C) Alauddin Khalji D) None of the above
 
Answer & Explanation Answer: C) Alauddin Khalji

Explanation:
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Q:

Which of the following reactions are redox reactions?

A) Ba(s)+Cl2(g)--->BaCl2(s) B) Mg(s)+Br2(l)--->MgBr2(s)
C) Al(s)+3Ag^+(aq)--->Al^3+(aq)+3Ag(s) D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A redox reaction is a type of reaction which involves transfer of electrons among two species. This reaction is also called oxidation-reduction reaction.

In oxidation process, there is an increase in oxidation state of an atom, ion or molecule by losing the electrons.

In reduction process, there is a decrease in oxidation state of an atom, ion or molecule by accepting the electrons.

1)

image

In this reaction, Ba undergoes oxidation and Cl undergoes reduction.
This reaction is redox reaction.
In this reaction, oxidation number of Ba increases from 0 to +2 . So, Ba undergoes oxidation. The oxidation number of Cl decreases from 0 to -1. So, Cl undergoes reduction.

 

2) 

 

image

From this above reaction, it is clear that Aluminum undergoes oxidation and silver undergoes reduction.
Due to this, this reaction is redox reaction.

In this reaction, oxidation number of Aluminum increases from 0 to +1. So, aluminum undergoes oxidation. The oxidation number of silver decreases from +1 to 0. So, silver undergoes reduction.

 

3)


image

In this reaction, Mg undergoes oxidation and Br undergoes reduction.
This reaction is redox reaction.
The reactions 1, 3 and 4 are redox reactions.
In this reaction, oxidation number of Mg increases from 0 to +2 . So, Mg undergoes oxidation. The oxidation number of Br decreases from 0 to -1 . So, Br undergoes reduction.

 

Hence all the above reactions are redox reactions.

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Q:

Which of the following data structure is linear type?

A) Tree B) Binary Tree
C) Queue D) Graph
 
Answer & Explanation Answer: C) Queue

Explanation:

A data structure is a specialized format for organizing and storing data. General data structure types include the array, the file, the record, the table, the tree, and so on. Any data structure is designed to organize data to suit a specific purpose so that it can be accessed and worked with in appropriate ways.

 

Linear data structure: A linear data structure traverses the data elements sequentially, in which only one data element can directly be reached.

Ex: Arrays, Linked Lists, Stack, Queue, Any type of List all are linear.

 

Trees like Binary Tree, B Tree or B+ Tree are examples of non linear data structure.

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Q:

Which payment type can help you stick to a budget?

A) Payday loans B) Cash advances
C) Debit cards D) Credit cards
 
Answer & Explanation Answer: C) Debit cards

Explanation:

There are two payment types that will help you stick to your budget.

1. Cash
2. Debit Card

The amount in the debit card is the only amount you can spend to stay within budget.

These method work because once you spend your money, you are done. You don’t have anything else to spend.

 

Credit cards, payday loans, and cash advances are all loans on future income. When you use a credit card, there is always just a little bit more you can spend. These types do not help you budget properly. In fact, these types encourage you to spend beyond your means and be out of budget.

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Q:

Which party has announced that the party is quitting from the BJP-Led NDA Alliance at the center?

A) Shiv Sena B) Telugu Desham Party
C) Lok Janshakti Party D) Janata Dal United
 
Answer & Explanation Answer: B) Telugu Desham Party

Explanation:

Andhra Pradesh's TDP - Telugu Desam Party, today i.e on 16th March 2018 quit the NDA government at the Centre a week after two of its ministers resigned from the Union cabinet over the issue of special status for Andhra Pradesh.

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