Q:

In which of the following mammals estrous cycle is absent ?

A) Rabbit	B) Horse
C) Cow	D) Monkey

Answer & Explanation Answer: D) Monkey

Explanation:

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Q:

Select the antonym of:

skeptic

A) profaner	B) heretic
C) atheist	D) devotee

Answer & Explanation Answer: D) devotee

Explanation:

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Q:

What comes down but never goes up?

Answer

Rain is what only comes down but never goes up.

Workspace

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9 7220

Q:

Improve the bracketed part of the sentence.

I went to sleep last night, (almost as soon as) my head hit the pillow.

A) no sooner then	B) as quickly as
C) almost as quickly as	D) no improvement

Answer & Explanation Answer: D) no improvement

Explanation:

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Q:

The degree of dissociation ( $α$ ) of a weak electrolyte, $A_{x} B_{y}$ is related to van't Hoff factor (i) by the expression:

$1 . α = \frac{x + y + 1}{i - 1}$

$2 . α = \frac{x + y - 1}{i - 1}$

$3 . α = \frac{i - 1}{x + y + 1}$

$4 . α = \frac{i - 1}{x + y - 1}$

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

Answer & Explanation Answer: D) 4 is correct

Explanation:

Van't Hoff factor (i) = $\frac{O b s e r v e d C o l l i g a t i v e P r o p e r t y}{N o r m a l C o l l i g a t i v e P r o p e r t y}$

$\begin{matrix} A_{x} B_{y} \\ 1 - α \end{matrix} \to \begin{matrix} x A^{+ y} \\ x α \end{matrix} + \begin{matrix} y B^{- x} \\ y α \end{matrix}$

Total Moles = $1 - α + x α + y α$ = $1 - α (x + y - 1)$

$i = \frac{1 + α (x + y - 1)}{1}$

$\Rightarrow α = \frac{i - 1}{x + y - 1}$

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Q:

What will be the acceleration produced when a force of 21 N is applied on an object of mass 3 kg?

A) 0.7 m/s2	B) 7 m/s2
C) 0.007 m/s2	D) 70 m/s2

Answer & Explanation Answer: B) 7 m/s2

Explanation:

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Q:

Cutaneous respiration occurs in

A) Cockroach	B) Salamander
C) Crab	D) Parrot

Answer & Explanation Answer: B) Salamander

Explanation:

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Q:

Which of these illustrates the Secondary Structure of a Protein?

chemistry1519110232.jpg image

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

Answer & Explanation Answer: B) B

Explanation:

The Secondary Structure of a Protein is option B)

The Secondary Structure of a Protein results from Hydrogen Bonds.

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