Q:

Which of the following classes of animals has/have three-chambered heart?

A) Pisces and Amphibia	B) Amphibia and Reptilia
C) Reptilia only	D) Amphibia only

Answer & Explanation Answer: B) Amphibia and Reptilia

Explanation:

Mammalian and avian hearts have four chambers two atria and two ventricles.Amphibians and reptiles, by contrast, have a three-chambered heart. The three-chambered heart consists of two atria and one ventricle.Fish possess the simplest type of true heart a two-chambered organ composed of one atrium and one ventricle.

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Q:

DPT vaccine is categorized as which of the following ?

A) Anti viral vaccine	B) Anti protozoan vaccine
C) Anti rickettsial vaccine	D) A combined vaccine

Answer & Explanation Answer: D) A combined vaccine

Explanation:

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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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Q:

Which of the following has pH value 7?

A) Pure Water	B) H2SO4
C) Sodium Carbonate	D) HCl

Answer & Explanation Answer: A) Pure Water

Explanation:

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Q:

In each of the questions, four alternatives are given for the Idiom/Phrase. Choose the alternative which best expresses the meaning of the Idiom/Phrase and click the button corresponding to it.

Be down with

A) Suffering from	B) In grief with
C) In pain with	D) Aching with

Answer & Explanation Answer: A) Suffering from

Explanation:

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Q:

Which of the following organisms does not fit into the Cell Theory?

A) Bacteria	B) Virus
C) Fungi	D) Plants

Answer & Explanation Answer: B) Virus

Explanation:

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Q:

For the aquatic organisms, the source of food is

A) Phytoplankton	B) Sea Weed
C) Aqua plankton	D) Zooplankton

Answer & Explanation Answer: A) Phytoplankton

Explanation:

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Q:

Four words are given, out of which only one word is spelt correctly. Choose the correctly spelt word and click the button corresponding to it.

A) Benevolens	B) Benevolene
C) Benevolence	D) Benevelence

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