Q: Which of the following statements is correct ?

A: Protons are negatively charged and are present in the nucleus

B: Electrons are positively charged and are present in the nucleus

C: Electrons are negatively charged and are present in the orbits

D: The entire mass of atom is distributed in the orbits



Correct Option: C  [ Electrons are negatively charged and are present in the orbits ]

Remark:


Q: The first nuclear test conducted by India under the code name of "Smiling Buddha" was in the year:

A: 1973

B: 1974

C: 1975

D: 1976



Correct Option: B  [ 1974 ]

Remark:


Q: Which of the following blood group is considered as Universal Donor ?

A: A

B: AB

C: B

D: O



Correct Option: D  [ O ]

Remark:


Q: Rainbow is formed due to a combination of:

A: refraction and absorption

B: dispersion and diffraction

C: refraction and scattering

D: dispersion and total internal re?ection



Correct Option: D  [ dispersion and total internal re?ection ]

Remark:


Q: Aryabhatta was a famous ________ of ancient India.

A: Doctor

B: Poet

C: Physicist

D: Mathematician



Correct Option: D  [ Mathematician ]

Remark:


Q: Entomology is the science that studies:

A: The origin and history of technical and scientific terms.

B: Insects

C: The formation of Rocks

D: Behavoiur of human beings



Correct Option: B  [ Insects ]

Remark:


Q: ELISA stands for:

A: Enzyme-linked immunosorbent assay

B: Epithelium lesions in surface analysis

C: Energy-linked immunity assay

D: Enzyme-linked immunity analysis



Correct Option: A  [ Enzyme-linked immunosorbent assay ]

Remark:


Q: Which of the following vitamins are water soluble?

A: Vitamin-A & Vitamin-B

B: Vitamin-B & Vitamin-C

C: Vitamin-C & Vitamin-D

D: Vitamin-A & Vitamin-K



Correct Option: B  [ Vitamin-B & Vitamin-C ]

Remark:


Q: The sun is seen before the actual sunrise because of:

A: re?ection

B: refraction

C: scattering of light

D: rectilinear propagation of light



Correct Option: B  [ refraction ]

Remark:


Q: A radar which detect the presence of an aircraft in sky uses :

A: Sound waves

B: Radio waves

C: Ultrasonic waves

D: Infrared rays



Correct Option: B  [ Radio waves ]

Remark:
1...