Q:

Which statement about electrons and atomic orbitals is NOT true?

A) An orbital can contain a minimum of two electrons	B) An electron has the same amount of energy in all orbitals
C) An atom’s lowest energy level has only two orbitals	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

Yes, all the given statements are NOT true about electrons and atomic orbitals.

True statements are ::

An orbital can contain a maximum of two electrons.

An atom’s lowest energy level has only one orbital.

An electron has different amount of energies in all orbitals.

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Filed Under: Chemistry
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1 5578

Q:

Trichloroacetaldehyde was subject to Cannizzaro's reaction by using NaOH. The mixture of the products contains sodium trichloroacetate and another compound. The other compound is :

A) Chloroform	B) 2, 2, 2-Trichloroethanol
C) Trichloromethanol	D) 2, 2, 2-Trichloropropanol

Answer & Explanation Answer: B) 2, 2, 2-Trichloroethanol

Explanation:

$\begin{matrix} C l \\ | \\ C l & - & C & - & C H O \\ | \\ C l \end{matrix}$ $\to_{C a n n i z z a r o' s R e a c t i o n}^{N a O H}$ $\begin{matrix} C l \\ | \\ C l & - & C & - & C O O N a \\ | \\ C l \end{matrix}$ $+$ $\begin{matrix} C l \\ | \\ C l & - & C & - & C H_{2} \\ | 2 & 1 \\ C l \end{matrix}$ $- O H$

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Filed Under: Chemistry
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Q:

The non green heterotrophic plants of plant kingdom are

A) Algae	B) Fungi
C) Ferns	D) Both B & C

Answer & Explanation Answer: B) Fungi

Explanation:

The non green heterotrophic plants of plant kingdom are Fungi.

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10 5575

Q:

Cryogenic Engines find applications in

A) Frost - Free refrigerators	B) Sub-marine propulsion
C) Researches in superconductivity	D) Rocket technology

Answer & Explanation Answer: D) Rocket technology

Explanation:

Cryogenic Engines find applications in Rocket technology. A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer are gases liquefied and stored at very low temperatures. Notably, these engines were one of the main factors of NASA's success in reaching the Moon by the Saturn V rocket.

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Filed Under: Physics
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Q:

The purpose of the inclusion of Directive Principle of State Policy in the Indian Constitution is to establish:

A) Political democracy	B) Social democracy
C) Gandhian democracy	D) Social and economic democracy

Answer & Explanation Answer: D) Social and economic democracy

Explanation:

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Filed Under: Indian Politics

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Q:

Indian Standard Maridian passes through the states of UP,MP

A) AP and Karnataka	B) Karnataka and Tamilnadu
C) AP and Tamilnadu	D) Orissa and AP

Answer & Explanation Answer: D) Orissa and AP

Explanation:

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Filed Under: Indian Geography

6 5568

Q:

Hard copy of a document is

A) Printed on printer	B) Stored in floppy
C) Store in CD	D) Store in hard disk

Answer & Explanation Answer: A) Printed on printer

Explanation:

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Filed Under: Computer
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Q:

Asia's biggest milk brand Amul has recently announced to set up a dairy processing plant with the investment of 200 crore rupees in which of the following cities?

A) Varanasi	B) Kanpur
C) Lucknow	D) All of above

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