Questions

Q:

Browning of paper in old books is caused by

A) oxidation of cellulose B) collection of dust
C) frequent use D) lack of aeration
 
Answer & Explanation Answer: A) oxidation of cellulose

Explanation:
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Q:

The cause of Beri Beri was discovered by

A) Eijkman B) Macmillan
C) Alexanderson D) Cockrell
 
Answer & Explanation Answer: A) Eijkman

Explanation:
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Q:

How do you detect if two 8-bit signals are same?

Answer

Pass input to XOR and give their outputs to OR gate, if your output is 0 both 8-bit signals are same.


OR


Pass input to XNOR and give their outputs to AND gate, if your output is 1 both 8-bit signals are same. 

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Subject: Hardware

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Q:

Projects come in all sizes and shapes. Many times, project managers must daw from their "toolbox" of processes, tools, or methodologies. How many knowledge areas are described in the Project Management Body of Knowledge ? 

A) 2 - core processes and facilitating processes B) 9
C) 5 - initiation, planning,execution,control, and closing D) 39
 
Answer & Explanation Answer: B) 9

Explanation:

Answer A is incorrect because it pertains to the processes. Answer C is incorrect because these are the five phases of a project. Answer D is incorrect because there are 39 processes, not knowledge areas.

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Q:

Which scientist established the Law of Octaves?

A) John Newlands B) Antoine Lavoisier
C) Alfred Nobel D) Marie Curie
 
Answer & Explanation Answer: A) John Newlands

Explanation:

Law of Octaves states that "If the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of seven elements." That is every 8th element have the same physical and chemical properties. This was established by the British scientist John Newlands in the year 1865.

Which_scientist_established_the_Law_of_Octaves1559374791.jpg image

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Q:

Which among the following minerals is also known as Horn Silver?

A) Silver Chroride B) Zinc Phosphate
C) Silver Iodide D) Silver Sulphide
 
Answer & Explanation Answer: A) Silver Chroride

Explanation:

Silver chloride is a chemical compound with the chemical formula AgCl is also called as Horn Silver. It is also called as cerargyrite. It is a gray, very heavy halide mineral and an ore of silver.

Which_among_the_following_minerals_is_also_known_as_Horn_Silver1560942904.jpg image

 

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Q:

Which is the only gem of world made of a single element?

A) Platinum B) Diamond
C) Emerald D) Ruby
 
Answer & Explanation Answer: B) Diamond

Explanation:

The only gem of world made of a single element is Diamond.

the_only_gem_of_world_made_of_a_single_element1563602197.jpg image

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Q:

Best suited for areas subject to friction, the epithelial tissue is called as

A) transitional B) simple columnar
C) straited squamous D) areolar
 
Answer & Explanation Answer: C) straited squamous

Explanation:

The number of cell layers and cell types together give rise to 6 different types of epithelial tissue.


1. Simple squamous epithelia

2. Simple cuboidal epithelia

3. Simple columnar epithelia

4. Stratified squamous epithelia

5. Stratified cuboidal epithelia

6. Stratified columnar epithelia

 

Stratified squamous epithelia is best suited for areas subject to friction.

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