General Science Questions

Q:

Statement I :

Tides are the rise and fall of sea levels caused by the combined effects of the gravitationed forces exerted by the Moon and the Sun and the rotation of the Earth.

Statement II :

The Earth rotates from west to east. 

 

A) Both the statements are individually true and Statement II is the correct explanation of Statement I B) Both the statements are individually true but Statement II is not the correct explanation of Statement I
C) Statement I is true but Statement II is false D) Statement I is false but Statement II is true
 
Answer & Explanation Answer: B) Both the statements are individually true but Statement II is not the correct explanation of Statement I

Explanation:

Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of Earth.

Statement 2 is also correct. But it is not the correct explanation for the 1st statement.

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Q:

Lichens are the best indicator of

A) Air pollution B) Sound pollution
C) Noise pollution D) Water pollution
 
Answer & Explanation Answer: A) Air pollution

Explanation:

1. Lichens are plants that grow in exposed places such as rocks or tree bark.

 

2.  Lichens are widely used as environmental indicators or bio-indicators. They can be used as air pollution indicators, especially of the concentration of sulfur-di-oxide in the atmosphere.  

 

3. They need to be very good at absorbing water and nutrients to grow there.

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Q:

What is the scientific name for washing soda?

A) Sodium carbonate B) Sodium bicarbonate
C) Calcium carbonate D) Calcium bicarbonate
 
Answer & Explanation Answer: A) Sodium carbonate

Explanation:
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61 10124
Q:

The uranium fuel used worldwide is mainly in the form of 

A) U3O8 B) UO2
C) UF6 D) U metal
 
Answer & Explanation Answer: B) UO2

Explanation:
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Q:

The Mudumalai National Park is located in which state  ?

A) Chattisgarh B) Haryana
C) Tamil Nadu D) Karnataka
 
Answer & Explanation Answer: C) Tamil Nadu

Explanation:

The Mudumalai National Park (MNP) is located about 150 kilometres north-west of Coimbatore city in Tamil Nadu. The protected area is home to several endangered and vulnerable species including Indian elephant, Bengal tiger, gaur and Indian leopard. There are at least 266 species of birds in the sanctuary, including critically endangered Indian white-rumped vulture and long-billed vulture.

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31 9915
Q:

How many layers of skin does a human have?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:

The human skin is made of 3 layers. They are ::

1) The Epidermis

2) The Dermis

3) The Hypodermis

 

how_many_layers_does_human_skin_have1542259835.jpg image

 

Epidermis :: 

It is the outermost layer of skin, provides a waterproof barrier and creates our skin tone.

 

Demis ::

It is beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.

 

Hypodermis ::

It is deeper layer and is made of fat and connective tissue.

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11 9897
Q:

With reference to earthquakes, which of the following statements are correct?

A. Earthquakes largely occur along the converging plate boundaries.

B. Point of origin of earthquake in lithosphere is known as focus/hypocenter.

C. Intensity of earthquake decreases with distance from the epicenter.

D. Epicentre of earthquake always remains over continents only.

Select the correct answer using the code given below.

A) 1 and 2 only B) 1, 2 and 3
C) 2 and 3 only D) 1 and 4
 
Answer & Explanation Answer: B) 1, 2 and 3

Explanation:

Epicentre of Earthquakes can be over both oceanic and continental surface. Epicentres above oceanic surface are cause of tsunamisof large intensity. Anearthquake's hypocentreis the position where the strain energy stored in the rockis first released, marking thepointwhere the fault begins to rupture.

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Q:

In a laser (say neon laser) all the atoms emit the light waves of 

A) Same frequency B) Same amplitude
C) Same phase D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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