work is said to be done when a force causes_________​

Answers 1

Answer:

Work is said to be done when a force causes displacement of an object in the direction of applied force.

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Q.8 Which is the most stable carbocation among the following +CH³ CH3-CH²(CH³)²CH (CH³)³C+​

Explanation:

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>>Chemistry

>>Organic Chemistry - Some Basic Principles and Techniques

>>Fundamental Concepts in Organic Reaction Mechanism

>>Which of the following carbocation is mo

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Which of the following carbocation is most stable?

(a)(CH

3

)

3

C−CH

2

+

(b) (CH

3

)

3

C

+

(c) CH

3

CH

2

CH

2

+

(d) CH

3

CH

+

CH

2

CH

3

Medium

Solution

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The hyperconjugation involves the delocalisation of sigma electrons to the empty p orbital present at the alpha position as shown in the above image.

Hence, there is need of a sigma C−H bond of the sp

3

hybridized carbon atom which is present at alpha position with respect to the carbocation.

More the number of sigma C−H bonds at alpha position, more the number of hyperconjugating structures and more the stability. Hence structure (b) which is having nine sigma C−H bonds will be the most stable carbocation.

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Pointing to a man on the stage, Rita said, "He is the brother of the daughter of the wife of my husband." How is the man on the stage related to Rita? (a) son(b) husband(c) Cousin (d) Nephew ​

Answer:

The Man is the son of Rita. "Son".

Explanation:

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The Man is the son of Rita.

Hence, the correct answer is "Son".

Choose the correct option. (0.5 Marks) Which of the following is NOT used on a memo? ​

Answer:

(D) invitation of weddind

Convert 175 percent to decimal fraction and also in simplest form .​

Answer:

Decimal fraction: 1.75

175%

= 175/100

= 1.75

Simplest form: 7/4

175%

= 175/100

= 7/4 [ reducing by 25 ]

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