Questions

Q:

Charminar is made up of which rock?

A) Limestone B) Marble
C) Granite D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Charminar was built at the center of the Hyderabad city in Telangana state, to commemorate the eradication of Plague by Mohammed Quli Qutb Shah in early 1500's. 

charminar_is_made_up_of_which_rock1542451710.jpg image 

It was built with Granite, imestone and Marble.

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Q:

What are set up time & hold time constraints? What do they signify? Which one is critical for estimating maximum clock frequency of a circuit?

Answer

Suppose your flip-flop is positive edgetriggered. time for which data should be stable prior to positive edge clock is called setup is called setup time constraint.


Time for which data should be stable after the positive edge of clock is called as hold time constraint.


If any of these constraints are violate d then flip-flop will enter in meta stable state, in which we cannot determine the output of flip-flop.


there are two equation:


1. Tcq + Tcomb > Tskew + Thold


2. Tcq + Tcomb > Tskew + T - Tsetup


Tcq is time delay when data enters the flip flop and data comes at output of flip flop.


Tcomb is the logic delay between two flip flop.


Tskew is the delay of clock to flip flop: suppose there are two flip flop, if clock reaches first to source flip flop and then after some delay to destination flip flop, it is positive skew and if vice versa then negative  skew. 


so if you take 2 eq you will see that setup time is the determining factor of clock's time period.

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Q:

Full convertibility of a rupee means ?

A) Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply B) Repayment of loans in terms of rupees
C) Payment for imports in terms of rupees D) Purchase of foreign exchange for rupees freely
 
Answer & Explanation Answer: A) Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply

Explanation:
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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:

Cl|Cl-C-CHO|ClCannizzaro's ReactionNaOH Cl|Cl-C-COONa|Cl+ Cl|Cl-C-CH2 |21Cl-OH

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Q:

Narmada originates from its source situated in the state of

A) Maharashtra B) Uttar Pradesh
C) Madhya Pradesh D) Andhra Pradesh
 
Answer & Explanation Answer: C) Madhya Pradesh

Explanation:

Narmada rises near Amarkantak

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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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Q:

The National institute of Oceangraphy is located at

A) Goa B) Mumbai
C) Cochin D) Kandla
 
Answer & Explanation Answer: A) Goa

Explanation:
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Q:

Dry distillation of calcium formate gives

A) HCOOH B) CH3COOH
C) HCHO D) CH3CHO
 
Answer & Explanation Answer: C) HCHO

Explanation:

Dry distillation of calcium acetate and calcium formate leads to the formation of aldehydes and ketones.

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