Latest Science and Technology General Knowledge(GK) Questions and answers

1 .

What type of mirror is used in car headlights?

A)

Concave

B)

convex

C)

Both (a) & (b)

D)

None of the above

Correct Answer : Concave

Concave type of glasses are used in the headlights of the vehicles as the light from the bulb which is at focus will converges out and spreads and reflects back parallely.

2 .

MONEX is associated with

A)

Monsoon experiment

B)

Monetary experiment

C)

Montreal experiment

D)

Lunar experiment

Correct Answer : Monsoon experiment

Monsoon experiment is abbreviated as MONEX.

The Monsoon Experiment is the core of the GARP Monsoon Subprogramme, which is a major international effort to achieve a better understanding of the Planetary monsoon circulation, the major seasonal perturbation of the general circulation of the atmosphere and the influence of the annual cycle of precipitation associated with the monsoon on the agriculture of the many populous nations of the region.

Hence, MONEX is associated with The Monsoon Experiment.

3 .

Fear of crossing road is called as

A)

Erythrophobia

B)

Agoraphobia

C)

Emetophobia

D)

Aerophobia

Correct Answer : Agoraphobia

Fear of places and situations that might cause panic, helplessness or embarrassment is called Agoraphobia. Fear of crossing road causes some panic in them and comes under Agoraphobia.

4 .

Thermal energy is caused by the motion of

A)

molecules

B)

atoms

C)

Both (a) & (b)

D)

None of the above

Correct Answer : Both (a) & (b)

* Thermal energy is caused by the motion of atoms and molecules in the matter.

* Thermal energy is an example of kinetic energy, as it is due to the motion of particles, with motion being the key.

* Thermal energy results in an object or a system having a temperature that can be measured.

* Thermal energy can be transferred from one object or system to another in the form of heat.

5 .

Delonix regia Rafin is the scientific name of

A)

Gulmohar

B)

Banyan

C)

Chiku

D)

Tamarind

Correct Answer : Gulmohar

6 .

What color does yellow and green make?

A)

Ocean mist

B)

Tangerine

C)

Lime

D)

Maroon

Correct Answer : Lime

Yellow and green color mix make a Lime color.

The three primary colors in additive mixing are red, green, and blue. In the absence of color or, when no colors are showing, the result is black. If all three primary colors are showing, the result is white. When red and green combine, the result is yellow. When red and blue combine, the result is magenta. When blue and green combine, the result is cyan.

7 .

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

A)

Sodium peroxide

B)

Sodium nitrite

C)

Sodium bicarbonate

D)

Sodium azide

Correct Answer : Sodium azide

Sodium azide is used in airbag, used for safety of car driver. Under room temperature, sodium azide is a stable compound. However, when heated by an impulse it disintegrates to produce sodium and nitrogen.

8 .

The radioactive element most commonly detected in humans is

A)

cobalt-60

B)

plutonium-238

C)

potassium-40

D)

iodine-131

Correct Answer : potassium-40

9 .

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

A)

Catastrophism

B)

Bio-genesis

C)

Cosmozoic

D)

Abiogenesis

Correct Answer : Bio-genesis

10 .

The uranium fuel used worldwide is mainly in the form of

A)

UO2

B)

UF6

C)

U3O8

D)

U metal

Correct Answer : UO2

"Uranium dioxide or uranium (IV) oxide", has another name which is "Urania or uranous oxide", a form of oxide of uranium and black in colour, radioactive by nature, the crystalline form of uranium dioxide is called uraninite.

This particular form of uranium is basically used as radioactive fuel around the world to generate power from nuclear energy. Along with uranium dioxide, plutonium is also added together they form the MOX fuel.