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Q:

This statesman,politican,scholar,inventor,and one of early presidents of USA invented the swivel chair,the spherical sundial,the moldboard plow,and the cipher wheel.

A) George Washington B) Alexander Hamilton
C) John Adams D) Thomas Jefferson
 
Answer & Explanation Answer: D) Thomas Jefferson

Explanation:

 Thomas Jefferson (April 13, 1743 – July 4, 1826) was the third President of the United States (1801-1809) and the principal author of the Declaration of Independence (1776).

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Filed Under: Inventions

Q:

Cinematography was invented by

A) Graham Bell B) Edison
C) Zeiss D) Faraday
 
Answer & Explanation Answer: B) Edison

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Filed Under: Inventions

Q:

What does airbag, used for safety of car driver, contain?

A) Sodium bicarbonate B) Sodium azide
C) Sodium nitrite D) Sodium peroxide
 
Answer & Explanation Answer: B) Sodium azide

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Filed Under: General Science

Q:

Which one of the following types of waves are used in a night vision apparatus?

A) Radio waves B) Microwaves
C) Infra-red waves D) None of the above
 
Answer & Explanation Answer: C) Infra-red waves

Explanation:
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Filed Under: General Science

Q:

The theory which advocates that living beings can arise only from other living beings is termed

A) Bio-genesis B) Abiogenesis
C) Catastrophism D) Cosmozoic
 
Answer & Explanation Answer: A) Bio-genesis

Explanation:
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Filed Under: General Science

Q:

At present, scientists can determine the arrangement or relative positions of genes of DNA sequences on a chromosome. How does this knowledge benefit us?

1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds.
Which of the statements given above is/are correct?

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

Explanation:
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Filed Under: General Science

Q:

A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is

A) O positive B) A positive
C) B positive D) Cannot be determined on the basis of the given data
 
Answer & Explanation Answer: A) O positive

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Filed Under: General Science

Q:

The world famous 'Khajuraho' sculptures are located in

A) Gujarat B) Madhya Pradesh
C) Orissa D) Maharashtra
 
Answer & Explanation Answer: B) Madhya Pradesh

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Filed Under: Famous Places