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

1 .

The white matter of the spinal cord contains

A)

myelinated and unmyelinated nerve fibers

B)

unmyelinated nerve fibers only

C)

myelinated nerve fibers only

D)

some have both myelinated and unmyelinated nerve fibers

Correct Answer : myelinated and unmyelinated nerve fibers

Gray matter contains neural cells, dendrites, and axon terminals, while white matter consists of axons and myelin, and plays a key role in nerve cells' ability to connect to one another. Injury to either variety of tissue can interfere with your central nervous system's ability to function.

2 .

What is constellation?

A)

A particular pattern of equidistant stars from the earth in the sky

B)

A particular pattern of stars that may not be equidistant from the earth in the sky

C)

A particular pattern and satellites in the sky due totheir position in the space

D)

A particular pattern of planets of our solar system in the sky

Correct Answer : A particular pattern of stars that may not be equidistant from the earth in the sky

A constellation is a group of stars that forms an imaginary outline or pattern on the celestial sphere, typically representing an animal, mythological person or creature, a god, or an inanimate object. Stars may or may not be equidistant from the earth.

3 .

Which of the following is responsible for regulating noise pollution?

A)

Central authorities

B)

State authorities

C)

Local authorities

D)

Both (b) & (c)

Correct Answer : Both (b) & (c)

Both State and Local governments are responsible for regulating noise pollution. Noise pollution refers to the high noise level that we can not bear.

4 .

What substance gives plants their green color?

A)

Chlorine

B)

Chloroform

C)

Chlorophyll

D)

Caustic soda

Correct Answer : Chlorophyll

Chlorophyll is the pigment that gives pant leaves their green color.

5 .

Demography is the scientific study of

A)

Birth and death of population

B)

Growth of population

C)

The well being of populations

D)

All of the above

Correct Answer : All of the above

Demography is the scientific study of Birth and death, The well being and the Growth of population. In brief, it is the study of human populations based on their size, composition and distribution across space – and the process through which populations change.

6 .

The mechanism of water reabsorption by the renal tubules is

A)

Active transport

B)

Cotransport with sodium ions

C)

Solvent drag

D)

Osmosis

Correct Answer : Osmosis

Water reabsorption by the renal tubules is harmonally controlled and it is a osmosis mechanism.

7 .

Forest habitat and soil are conserved through

A)

Selective logging

B)

Differencial logs

C)

Both (a) & (b)

D)

None of the above

Correct Answer : Selective logging

Forest habitat and soil are conserved through selective logging, in which only some trees in an area of forest are cut.

8 .

Teens who drink are at risk of

A)

Date Rape

B)

HIV and other STDs

C)

Becoming an alcoholic

D)

All of the above

Correct Answer : All of the above

Teens drinking are at risk of date rape, becoming an alcoholic, HIV and other STDs.

Drinking also creates a higher risk for depression, anxiety, and low self-esteem. Drinking during puberty can also change hormones in the body. This can disrupt growth and puberty. Too much alcohol at one time can cause serious injury or death from alcohol poisoning.

9 .

Horography is an art of

A)

Reading paintings

B)

Constructing dials

C)

monumental scenes

D)

None of the above

Correct Answer : Constructing dials

Horography (Horology) the art of constructing time-keeping instruments such as watches and clocks.

10 .

Exercise frequency refers to

A)

Number of times you exercise per month

B)

Number of times you exercise per day

C)

Number of times you exercise per week

D)

All of the above

Correct Answer : Number of times you exercise per week

Frequency, as it applies to exercise, refers to how many times a week you do cardio and strength training workouts. It is one component of the basic F.I.T.T. principles that guide us in creating and changing workout programs. The FITT principles include frequency, intensity, type, and time.