Questions

Q:

Materials that usually are good conductors of electricity?

A) Aluminium B) Lead
C) Nickel D) Wood
 
Answer & Explanation Answer: A) Aluminium

Explanation:

Materials that usually allow electricity to pass through them are called Good conductors of electricity.


Conductors conduct electrical current very easily because of their free electrons.

Examples are :: Aluminium, Gold, Copper, Silver

 

Materials that do not allow or oppose electrical current & make poor conductors are called Insulators.

Examples are :: Glass, Plastic, Wood, Air,...

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5 2024
Q:

To keep warm, polar bears have a layer of ________ under their skin.

A) muscle B) fat
C) cartilage D) hair
 
Answer & Explanation Answer: B) fat

Explanation:
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0 2024
Q:

In a bipolar junction transistor

A) all the three regions (the emitter, the base and the collector) have equal concentrations of impurity B) the emitter has the least concentration of impurity
C) the collector has the least concentration of impurity D) the base has the least concentration of impurity
 
Answer & Explanation Answer: D) the base has the least concentration of impurity

Explanation:

In terms of concentration of impurity (a.k.a impurity doping concentration, often abbreviated to doping concentration), from the highest to the lowest among the three regions of a bipolar junction, emitter, collector, and base are the correct order. The above order is independent of the type of BJT, npn or pnp

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1 2023
Q:

Liquids and gases never show

A) diamagnetic property B) paramagnetic property
C) ferromagnetic property D) electromagnetic property
 
Answer & Explanation Answer: C) ferromagnetic property

Explanation:

On the basis of magnetic properties, substances are classified into three groups namely diamagnetic, paramagnetic and ferromagnetic.

As solids diffuse and reorder very slowly under ambient conditions, the net, directionally dependent (anisotropic) magnetic moment can persist. Conversely, liquids and gases freely tumble and reorder: water rearranges every few pico seconds (10^12 times per second).

Hence liquids and gases can never show ferromagnetic properties.

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0 2023
Q:

Which gases in the atmosphere absorb ultraviolet radiation?

A) Ozone B) Carbondi oxide
C) Oxygen D) Helium
 
Answer & Explanation Answer: A) Ozone

Explanation:

The ozone gas present in the atmosphere absorb ultraviolet radiation. It is spread as a ozone layer throughout the stratosphere.

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4 2023
Q:

Who won the EY Entrepreneur of the Year 2018?

A) Sushil Chandra B) Sunil Arora
C) Siddhartha Lal D) None of the above
 
Answer & Explanation Answer: C) Siddhartha Lal

Explanation:
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0 2023
Q:

A large underground economy results in an

A) Overstated GDP B) Understated GDP price index
C) Overstated GDP price index D) Understated GDP
 
Answer & Explanation Answer: D) Understated GDP

Explanation:
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2 2023
Q:

What will be output of following c code?

#include <stdio.h>
int main()

{
    int i;
    for(i=10;i<=15;i++){
         while(i){
             do{
                 printf("%d ",1);
                 if(i>1)
                      continue;
             }while(0);
             break;
         }
    }
    return 0;
}

Answer

Output: 1 1 1 1 1 1
For loop will execute six times.


 


 


 


Note: continue keyword in do-while loop bring the program its while condition (while(0)) which is always false.

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Subject: Programming

0 2023