Questions

Q:

Who Invented Microwave Oven ?

A) Lewis Edson Waterman B) Levi Strauss
C) Percy LeBaron Spencer D) Sir Sandford Fleming
 
Answer & Explanation Answer: C) Percy LeBaron Spencer

Explanation:
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Filed Under: Inventions

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Q:

Consider the following statements relating to Coal India Limited:1. It is designated as a 'Maha Ratna'company under the Ministry of Coal.2. It is the single largest coal producing company in the world.3. The Headquarters of Coal India Limited is located at Ranchi Jharkhand.
Which of the statements given above is/are correct?

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

Explanation:

Headquarters Kolkata, West Bengal, IndiaCoal India Limited (CIL) is an Indian state-controlled coal mining company headquartered in Kolkata, West Bengal, India and the largest coal-producing company in the world and a Maharatna company.

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Filed Under: Indian Geography
Exam Prep: Bank Exams

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Q:

What is the main ingredient in face powder?

A) Calcium carbonate B) Talc
C) Magnesium carbonate D) China clay
 
Answer & Explanation Answer: B) Talc

Explanation:

Talc or talcum is a clay mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 is the main ingredient in face powders that absorbs moisture and oil.

 

It is also called as French Chalk. Other ingredients include Calcium carbonate (chalk), Magnesium carbonate, China clay, starches like rice and potato, zinc oxide,...

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Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

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Q:

What type of bird is on a Canadian $1 coin?

Answer

Common Loon

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Subject: World Geography

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Q:

Give two ways of converting a two input NAND gate to an inverter.

Answer

One way is shorting the two inputs of the NAND gate and passing the input.


truth table:


A B output


1 1 0


0 0 1


The second way is passing the input to only one input (say A) of the NAND gate. Since the other input  (say B is floating, it is always logic one.


Truth table:


A B output


1 1 0 


0 1 1

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Subject: Hardware

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Q:

Al Aziziyah, the hottest place on earth is located in?

A) Nigeria B) Congo
C) Libya D) Sudan
 
Answer & Explanation Answer: C) Libya

Explanation:

Al Aziziyah, the hottest place on earth is located in Libya, in North Africa. On 13 September 1922, a high temperature of 58.0 °C was recorded in Al Aziziyah.

 

Al_Aziziyah,_the_hottest_place_on_earth1557403285.jpg image

 

This is considered the highest temperature ever measured on Earth.

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Filed Under: World Geography
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: IT Trainer , Bank PO , Bank Clerk , Analyst

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Q:

At what temperature do pathogenic bacteria grow best in food?

A) 5 to 15 degrees Celsius B) 15 to 25 degrees Celsius
C) 20 to 45 degrees Celsius D) 40 to 65 degrees Celsius
 
Answer & Explanation Answer: C) 20 to 45 degrees Celsius

Explanation:

The Bacteria that causes Food Borne illness are called Food Borne Pathogens. Most of the pathogens are mesophilic in nature, optimum temperature may be around 20-45 degree celsius. This range of temperatures is often called the "Danger Zone." Dry foods do not support the growth of bacteria.

 

In order to kill pathogenic bacteria you need temperatures above 74ºC. Temperature is the easiest factor to control in order to prevent bacterial growth.

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Filed Under: Biology
Exam Prep: Bank Exams , AIEEE
Job Role: Bank Clerk , Analyst

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Q:

The International Day for Monuments and Sites is observed globally on __________.

A) 19 April B) 18 April
C) 21 April D) 16 April
 
Answer & Explanation Answer: B) 18 April

Explanation:

Every year on 18 April, ICOMOS (International Council on Monuments and Sites) celebrates the International Day for Monuments and Sites (also called as World Heritage day), whose establishment was approved by the 22nd UNESCO General Conference in 1983.

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Filed Under: Important Days and Years
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk

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