Q:

Optical fibre works on which of the following principle of light?

A) Reflection	B) Refraction
C) Diffraction	D) Total internal reflection

Answer & Explanation Answer: D) Total internal reflection

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

_____ mirror is used in the headlights of cars.

A) Semi-circular	B) Conical
C) Convex	D) Concave

Answer & Explanation Answer: D) Concave

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

According to the Indus water treaty which river will be not governed by Pakistan?

A) Indus	B) Chenab
C) Jhelum	D) Ravi

Answer & Explanation Answer: D) Ravi

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams

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Q:

Which one of the following countries is not a member of the "BRICS" group?

A) Brazil	B) Russia
C) China	D) Indonesia

Answer & Explanation Answer: D) Indonesia

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Q:

What does BOD5 refer to?

A) Biochemical Oxygen Demand in 5 days	B) Biochemical Oxygen Demand in 5 hours
C) Biochemical Oxygen Demand in 5 minutes	D) Biochemical Oxygen Demand in 5 Months

Answer & Explanation Answer: A) Biochemical Oxygen Demand in 5 days

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Filed Under: General Science
Exam Prep: Bank Exams , CAT

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Q:

A sentence has been given in Active/Passive Voice. Out of the four given alternatives, select the one which best expresses the same sentence in Passive/Active Voice.

The lecturer praised her.

A) Her was praised by the lecturer.	B) She felt praised by the lecturer.
C) She was praised by the lecturer.	D) She is praised by the lecturer.

Answer & Explanation Answer: C) She was praised by the lecturer.

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Filed Under: English
Exam Prep: Bank Exams , GRE , TOEFL

0 1032

Q:

Which one of the following is not a semiconductor?

A) Silicon	B) Germanium
C) Quartz	D) Gallium arsenide

Answer & Explanation Answer: C) Quartz

Explanation:

Semiconductors are the basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc. 2. Lattice structure and the atomic structure of constituent elements decide whether a particular material will be insulator, metal or semiconductor. Semiconductors are elemental (Si, Ge) as well as compound (GaAs, CdS, etc.). Silicon, Germanium, Gallium Arsenide are semiconductors, but Quartz is an insulator.

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Filed Under: Chemistry
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Q:

If we take a small amount of washing soda and add approximately 1 mL of dilute hydrochloric acid to it, what will we observe?

A) only neutralisation reaction occurs, no gas is released	B) white-coloured precipitate is formed
C) CO2 gas comes out with brisk effervescence	D) H2 gas comes out with pop sound

Answer & Explanation Answer: C) CO2 gas comes out with brisk effervescence

Explanation:

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