Exams Questions and Answers

Q:

Which of the following statements are CORRECT?

I. Ethanol is a good solvent for organic compounds.

II. Boiling and melting points of ethanol are low with respect to water.

III. Ethanol is used tincture iodine

A) Only I and II	B) Only I and III
C) Only II and III	D) All I, II and III

Answer & Explanation Answer: D) All I, II and III

Explanation:

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Filed Under: Chemistry
Exam Prep: Bank Exams

1 27911

Q:

Saturated carbon compounds can form which types of chain structures?

I. Straight chain

II. Branched chain

A) Only I	B) Only II
C) Neither I nor II	D) Both I and II

Answer & Explanation Answer: D) Both I and II

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Filed Under: Chemistry
Exam Prep: Bank Exams

2 27903

Q:

Artists are generally whimsical. Some of them are frustrated. Frustrated people are prone to be drug addicts.

Based on these statements which of the following conclusions is true?

A) All frustrated people are drug addicts	B) Frustrated people are whimsical
C) All drug addicts are artists	D) Some artists may be drug addicts

Answer & Explanation Answer: D) Some artists may be drug addicts

Explanation:

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Filed Under: Statement and Conclusions
Exam Prep: Bank Exams , CAT , GATE , GRE
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41 27901

Q:

If the mean of a, b, c is M and ab + bc + ca = 0, then the mean of $\frac{a^{2} + b^{2} + c^{2}}{3}$ is :

A) M	B) 3 M^2
C) 2 (M/3)	D) M^2

Answer & Explanation Answer: B) 3 M^2

Explanation:

We have : ( a + b + c) / 3 = M or (a + b + c) = 3M.

Now. ${(a + b + c)}^{2} = {(3 M)}^{2} = 9 M^{2}$ .

$< = > a^{2} + b^{2} + c^{2} + 2 (a b + b c + c a) = 9 M^{2}$

$a^{2} + b^{2} + c^{2} = 9 M^{2}, (a b + b c + c a = 0)$

Required mean = $(\frac{a^{2} + b^{2} + c^{2}}{3}) = \frac{9 M^{2}}{3} = 3 M^{2}$ .

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Filed Under: Average
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

35 27867

Q:

Isotopes of an element have ______.

A) Same physical properties	B) Different chemical properties
C) Different number of neutrons	D) Different atomic number

Answer & Explanation Answer: C) Different number of neutrons

Explanation:

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Filed Under: Chemistry
Exam Prep: Bank Exams

1 27853

Q:

Transpiration in plants does helps in which of the following?

A) Absorption and upward movement of water	B) Absorption and upward movement of minerals dissolved in water
C) Temperature regulation	D) All options are correct

Answer & Explanation Answer: D) All options are correct

Explanation:

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Filed Under: General Science
Exam Prep: Bank Exams

0 27847

Q:

Which shows the order in which vertebrates evolved?

A) fish, reptiles, amphibians, birds, mammals	B) amphibians, fish, reptiles, birds, mammals
C) amphibians, fish, birds, reptiles, mammals	D) fish, amphibians, reptiles, birds, mammals

Answer & Explanation Answer: D) fish, amphibians, reptiles, birds, mammals

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Filed Under: Biology
Exam Prep: Bank Exams

3 27845

Q:

What is the name of the messaging platform to be used by the Indian Army shortly?

A) Safe Communication Network	B) Secure Application for Internet
C) Safe Messaging Service	D) Secure Instant Messaging

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