Altimeter is used to measure:

rikazzz | June 18, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: Altitude

Odometer is used to measure:

rikazzz | June 18, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: Distance traveled by vehicle

One barrel of Petroleum is equal to:

rikazzz | June 13, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: 159

The instrument used in a submarine to see the object on the surface of water is:

rikazzz | June 13, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: Periscope

Periscope, optical instrument used in land and sea warfare, submarine navigation, and elsewhere to enable an observer to see his surroundings while remaining under cover, behind armour, or submerged.

Which of the following phenomenon gives an evidence for the spherical shape of the earth?

rikazzz | June 13, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: Lunar eclipse

The evidence is based on the assumption that Lunar Eclipses are based on the shadow of the Earth falling on the Moon. This assumption stems from the fact that Lunar eclipses only occur on a Full Moon, and that they follow a pattern related to the angles between the Sun, Moon and Earth, angles which can be shown vary in a predictable way.

 

We can see that the shadow of the Earth is ALWAYS curved (and actually almost circular), regardless of which part of the Earth the moon is visible from. The only shape which give the same shape shadow from every direction is a sphere (or close to it).

 

Because of the irregularities on the Moon’s surface, it would be very difficult to accurately measure the Earth’s oblateness (the degree to which it is non-spherical) just from observations of the Lunar Eclipse.

 

The best way to measure the oblateness is through accurate survey of the surface; especially since the difference between the equatorial circumference and the Polar circumference is so small.

Midnight sun is a phenomenon of:

rikazzz | June 13, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: Northern portion of Arctic circle

The midnight sun only occurs at certain times of the year and is only visible to North of Arctic Circle. Norway is ideally placed to experience this eerie yet captivating sight.

Allergy is caused due to:

rikazzz | June 13, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: Introduction of external material into body

Ultra filtering unit of kidney is known as:

rikazzz | June 13, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: Glomerulus

Reflex action in the body is controlled by:

rikazzz | June 13, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: Central nervous system

How much blood does an average adult have in the body?

rikazzz | June 10, 2022 | Comment
ANSWER & EXPLANATION

Correct Answer: 4.5 to 5.5 liters

The average adult has about 1.2 to 1.5 gallons (4.5 to 5.5 liters) of blood circulating inside their body.