Q:

Which of the following element is NOT a metal?

A) Al	B) P
C) Ca	D) K

Answer & Explanation Answer: B) P

Explanation:

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1 70050

Q:

The properties of several unknown solids were measured. Choose the correct option.

A) A, C	B) A, C, D
C) B, D	D) A, B, C, D

Answer & Explanation Answer: D) A, B, C, D

Explanation:

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0 70035

Q:

Which of the following is used in making perfumes as well as flavouring agents?

A) Esters	B) Ethanol
C) Methanol	D) Ethanoic acid

Answer & Explanation Answer: A) Esters

Explanation:

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4 70030

Q:

Rearrange the parts of the sentence in correct order.

The orbital motion

P : of the earth

Q : uncertain rates

R : can have

A) QPR	B) QRP
C) RQP	D) PRQ

Answer & Explanation Answer: D) PRQ

Explanation:

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1 70016

Q:

Match List -I with List -II and select the correct answer using the code given below the Lists :

List -I List-II

(Compound/Molecule) (Shape of Molecule)

A. CH3F 1. Trigonal planar

B. HCHO 2. Tetrahedral

C. HCN 3. Trigonal pyramidal

D. NH3 4. Linear

A) 2 4 1 3	B) 2 1 4 3
C) 3 4 1 2	D) 3 1 4 2

Answer & Explanation Answer: B) 2 1 4 3

Explanation:

HCHO: The carbon and and the oxygen are bonded through a double bond which counts as "one electron pair". Hence the molecule has three electron pairs and is trigonal planar.

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0 69996

Q:

Rearrange the parts of the sentence in correct order.

To begin with,

P-is not that they are 'unsmart'
Q-the problem with Indian cities
R-but that they are dysfunctional

A) RPQ	B) QRP
C) QPR	D) PRQ

Answer & Explanation Answer: C) QPR

Explanation:

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0 69968

Q:

Which one of the following statements is not correct?

A) Fischer projection represents the molecule in an eclipsed conformation	B) Newman projection can be represented in eclipsed, staggered and skew conformations
C) Fischer projection of the molecule is its most stable conformation	D) In Sawhorse projections, the lines are inclined at an angle of 120 deg to each other.

Answer & Explanation Answer: C) Fischer projection of the molecule is its most stable conformation

Explanation:

Fischer projections were originally proposed for the depiction of carbohydrates and used by chemists, particularly in organic chemistry and biochemistry.A Fischer projection always uses an eclipsed conformation. A Newman diagram can represent either an eclipsed conformation or a staggered conformation or a skew conformation.

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Q:

Choose the word that best defines the given phrase

‘A written account of the life of an individual’

A) Autobiography	B) Epigraph
C) Biography	D) Novel

Answer & Explanation Answer: C) Biography

Explanation:

Biography is written with the permission, cooperation, and at times, participation of a subject or a subject's heirs.

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