Science Practice Questions for State PSC Exams

Speed of Light remains same in Vacuum.

Ans: (D)

Solution: Factual Question

Ans: (A)

Solution: Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. It is not metallic.

Ans: (B)

Solution: There are 12 pairs of cranial nerves in humans.

Ans: (A)

Solution: The pyramid of energy, however, is always upright.

Ecological Pyramid: Common parameters used for constructing ecological pyramids are the number of individuals (pyramid of numbers), dry weight (pyramid of biomass) or rate of energy flow (pyramid of energy) at successive trophic levels.

Ans: (B)

Solution: Monosodium glutamate (MSG) is a flavor enhancer commonly added to Chinese food, canned vegetables, soups and processed meats.

Ans: (D)

Solution: All are related to Corona Virus.

Ans: (C)

Solution: RAM is a primary Memory.

Ans: (B)

Solution: XML stands for extensible markup language. A markup language is a set of codes, or tags, that describes the text in a digital document. The most famous markup language is hypertext markup language (HTML), which is used to format Web pages.

Ans: (C)

Solution: Audible Range: 20 Hz to 20 KHz.
Ultra Sound: 20 KHz to 200 MHz.
Infra Sound: Less than 20 Hz.

Microwave frequencies range between 1 GHz to 1000 GHz.