Everyday Science 2141 MCQs [All-Courses]

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In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ?

A Chemical Reaction

B Nuclear reaction

C Fission nuclear reaction

D Fusion nuclear reaction

Review Detailed Answer

Correct Answer: Fusion nuclear reaction

___________ begins at 690 to 1,000 km from the surface, and extends to roughly 10,000 km.

A Troposphere

B Mesosphere

C Exosphere

D Stratosphere

Review Detailed Answer

Correct Answer: Exosphere

The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?

A red waves

B Infrared waves

C Ultrasonic

D super sonic

Review Detailed Answer

Correct Answer: Ultrasonic

Which of the following is true about Ionosphere?

A Its density is lesser at short distances from planetary surface in morning and further decreases as ionosphere rises at night-time, thereby allowing a greater range of radio frequencies to travel greater distances

B Its density is greater at short distances from tplanetary surface in daytime and decreases as ionosphere rises at night-time, thereby allowing a greater range of radio frequencies to travel greater distances

C Its density is greater at long distances from planetary surface in daytime and further increases as ionosphere rises at night-time, thereby allowing a greater range of radio frequencies to travel greater distances

D None of the above

Review Detailed Answer

Correct Answer: Its density is greater at short distances from tplanetary surface in daytime and decreases as ionosphere rises at night-time, thereby allowing a greater range of radio frequencies to travel greater distances

A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be ?

A 6 feet

B 12 feet

C 4 feet

D 3 feet

Review Detailed Answer

Correct Answer: 3 feet

Atmosphere is held in place by?

A Pressure of the planetary body

B Gravity of the planetary body

C Charge of the planetary body

D Heat of the planetary body

Review Detailed Answer

Correct Answer: Gravity of the planetary body

When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is _________?

A Visible

B Transparent

C Invisible

D opaque

Review Detailed Answer

Correct Answer: Visible

The thermosphere extends from an altitude of to the base of at ?

A 75 km, Mesosphere, 670 km

B 80 km, Ionosphere, 680 km

C 85 km, Exosphere, 690 km

D 90 km, Ozone Layer , 690 km

Review Detailed Answer

Correct Answer: 85 km, Exosphere, 690 km

It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the_______?

A pitch

B Frequency

C Time period

D Quality

Review Detailed Answer

Correct Answer: pitch

_________ is the layer wherein most meteors are incinerated before reaching the surface.

A Troposphere

B Stratosphere

C Mesosphere

D Ionosphere

Review Detailed Answer

Correct Answer: Mesosphere

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Everyday Science 2141 MCQs [All-Courses]

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All Topics 2141

In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ?

___________ begins at 690 to 1,000 km from the surface, and extends to roughly 10,000 km.

The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?

Which of the following is true about Ionosphere?

A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be ?

Atmosphere is held in place by?

When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is _________?

The thermosphere extends from an altitude of to the base of at ?

It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the_______?

_________ is the layer wherein most meteors are incinerated before reaching the surface.

Contact Info

Everyday Science 2141 MCQs [All-Courses]

All Topics 2141

All Topics 2141

Everyday Science 2136

In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ?

___________ begins at 690 to 1,000 km from the surface, and extends to roughly 10,000 km.

The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?

Which of the following is true about Ionosphere?

A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be ?

Atmosphere is held in place by?

When a ray of sunlight enters a dark room , its straight path become visible because of dust particles hanging in the air. It is because light is _________?

The thermosphere extends from an altitude of ________ to the base of ________ at ________?

It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the_______?

_________ is the layer wherein most meteors are incinerated before reaching the surface.

The thermosphere extends from an altitude of to the base of at ?