Questions

Q:

What occurs when an atom loses an electron?

A) The atom's radius decreases and the atom becomes a positive ion. B) The atom's radius increases and the atom becomes a negative ion.
C) The atom's radius decreases and the atom becomes a negative ion. D) The atom's radius increases and the atom becomes a positive ion.
 
Answer & Explanation Answer: A) The atom's radius decreases and the atom becomes a positive ion.

Explanation:

When an atom loses an electron it becomes a positive ion by acquiring negatively charged. When it loses electron, the atom's radius also decreased.

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Q:

Give the truth table for a Half Adder. Give a gate level Implementation of the same.

Answer

TRUTH TABLE FOR HALF ADDER


A    B  SUM  CARRY


0    0    0         0


0    1    1         0


1    0    1         0


1    1    0         1


INPLEMENTATION:


For SUM, The two inputs A and B are given to XOR gate.


For Carry, The two inputs A and B are given to AND gate.

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Subject: Hardware

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Q:

Claude Bernard first recognized

A) plant stomata opening and closing to maintain homeostasis B) chemical reactions of enzymes
C) separate fluids outside and inside the cell D) feedback loops
 
Answer & Explanation Answer: A) plant stomata opening and closing to maintain homeostasis

Explanation:

Claud_Bernard1533194164.jpg image

 

Claude Bernard was a French physiologist, who first recognised plant stomata opening and closing to maintain homeostasis.

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Q:

Which are the regional Commissions of the UN Economic and Social Council

A) Economic Commission for Europe, Economic Commission for Asia and Pacific B) Economic Commission for Africa
C) Economic Commission for Latin America and the Caribbean D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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Filed Under: World Organisations

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Q:

Which of  the  following  statements  about the social base of the Arya Samaj in British India is/are correct?1.It  was  located  mainly in  Punjab  and western Uttar Pradesh.2.It    mainly    comprised    the    trading castes.3.It  was  much  more  limited  than  that  of the Brahmo Samaj.

Select  the  correct  answer  using  the  code given below.

A) 1 and 2 only B) 2 and 3 only
C) 1 only D) 1, 2 and 3
 
Answer & Explanation Answer: C) 1 only

Explanation:

Arya Samaj was an Indian religious movement  based   on   Vedas  and was     founded     by     Dayananda Saraswati on April 7, 1875 and was based in Punjab and western Uttar Pradesh     states     like,     Aligarh, Varanasi, etc.  It  was  against  caste system  and  supported  equality  of men   and   women,moreover   it mainly    comprised    the    trading castes;    while    Brahmo    Samaj, founded  by  Raja  Rammohan  Roy, was limited because it was popular only   among   elite   and   educated society.

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Filed Under: Indian History
Exam Prep: Bank Exams

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Q:

Convert the expression ((A + B) * C – (D – E) ^ (F + G)) to equivalent Prefix Notation

Answer

Prefix Notation:


^ - * +ABC - DE + FG

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Subject: Programming

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Q:

What is meant by Maskable interrupts?

Answer

An interrupt that can be turned off by the programmer is known as Maskable interrupt.

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Subject: Hardware

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Q:

The acid used in lead storage cells is

A) Sulphuric acid B) Nitric acid
C) Hydrochloric acid D) Phosphoric acid
 
Answer & Explanation Answer: A) Sulphuric acid

Explanation:

The acid used in lead storage cells is Sulphuric acid. They are used car batteries. Lead-acid batteries are capable of being recharged, which is important for their use in cars.

the_acid_used_in_lead_storage_cells_is1545132418.jpg image

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Filed Under: Chemistry
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