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Q:

Which of the following is the most stable carbocation?

Screenshot_(8)1522302473.png image

A) 4 B) 3
C) 2 D) 1
 
Answer & Explanation Answer: C) 2

Explanation:

Here the most stable carbocation is the option (2).

 

Carbocations are always hungry for electrons. The stability of carbocations increases from primary to secondary to tertiary. Here, option (c) shows the most stable carbocation because it can easily withdraw electrons from two other carbon atoms and the more electronegative oxygen atom.

 

Carbocation stability depends on hyperconjugation. The tertiary carbocation is stabilized by electron releasing inductive effect.

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Filed Under: Chemistry
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Q:

Merge cells option can be applied from?

A) Format Cells dialog box Alignment Tab B) Formatting toolbar
C) Both of above D) None of above
 
Answer & Explanation Answer: A) Format Cells dialog box Alignment Tab

Explanation:

Merge_cells_option_can_be_applied_from1554444124.PNG image

 

Steps for merging cells :

1. Select which you want to merge

2. After selecting right click on that highlightened cells to get format cells option.

3. Click format cells to merge get merge option.

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Filed Under: Computer
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Q:

Who first translated Mahabharata into Tamil?

A) Kamban B) Bharavi
C) Perundevanar D) Sundaramurthi
 
Answer & Explanation Answer: C) Perundevanar

Explanation:
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Filed Under: Indian History
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Q:

Which of the following animals was not native to India?

A) Rhinoceros B) Tiger
C) Horse D) Elephant
 
Answer & Explanation Answer: C) Horse

Explanation:
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Filed Under: Indian Geography
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Q:

Oscar Awards are conferred annually by

A) Academy of Motion Pictures, arts and sciences, USA B) Hollywood Foreign Press Association
C) Government of United States D) None
 
Answer & Explanation Answer: A) Academy of Motion Pictures, arts and sciences, USA

Explanation:
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Filed Under: Honours and Awards
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Q:

Which of the following is the strongest base?

A) LiCH3 B) LiF
C) LiOH D) LiNH2
 
Answer & Explanation Answer: A) LiCH3

Explanation:

The stability of the ions is determined by the energy of the lone pairs. Carbon has the least effective nuclear charge (Zeff) and so the lone pair on the CH3− ion has the highest energy, making it the least stable ion and so the strongest base. The Zeff increases as we move across the period until we get to fluorine which has the greatest Zeff and so its lone pairs have the lowest energy, making F− the least basic ion.

 

In order of decreasing basicity they are ranked LiCH3 > LiNH2 > LiOH > LiF. We are dealing with the ions F−, OH−, NH2− and CH3− and so the factor which influences their basicity is the stability of the ion compared to its conjugate acid.

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Filed Under: Chemistry
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Q:

What happens during the S-phase of the cell cycle?

A) cell division B) cell growth
C) DNA replication D) protein and enzyme synthesis
 
Answer & Explanation Answer: C) DNA replication

Explanation:

S-phase (synthesis phase) is the part of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase. Precise and accurate DNA replication is necessary to prevent genetic abnormalities which often lead to cell death or disease.

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Filed Under: Biology
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Q:

The accounting process involves all of the following except

A) identifying economic transactions that are relevant to the business B) analyzing and interpreting financial reports
C) communicating financial information to users by preparing financial reports D) recording nonquantifiable economic events
 
Answer & Explanation Answer: B) analyzing and interpreting financial reports

Explanation:

The three steps in the accounting process are

 

1. Identification,

2. Recording, and

3. Communication. 

 

Hence, analyzing and interpreting financial reports is not involved in the accounting process.

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Filed Under: Accounts Receivable
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