Science & Technology

WBPSC Misc 202315 questions

1. Q1

   Which is the chemical formula of salt?

   • ANaCl
   • BCaCO3
   • CNa3PO4
   • DNa2CO3
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   Correct answer: (A) NaCl

   Common table salt is sodium chloride, chemical formula NaCl.

2. Q2

   Which of the following is a water-borne disease?

   • ATuberculosis
   • BTyphoid
   • CMalaria
   • DDiphtheria
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   Correct answer: (B) Typhoid

   Typhoid, caused by Salmonella typhi, spreads through contaminated water and food, making it a water-borne disease.

3. Q3

   Study of insects is called

   • AEmetology
   • BEntomology
   • CAstrology
   • DGeology
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   Correct answer: (B) Entomology

   Entomology is the branch of zoology dealing with the scientific study of insects.

4. Q4

   Which of the following organisms is not classified as an amphibian?

   • ACrocodile
   • BNewt
   • CSalamander
   • DFrog
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   Correct answer: (A) Crocodile

   A crocodile is a reptile, not an amphibian; newts, salamanders and frogs are all amphibians, so the crocodile is the odd one out.

5. Q5

   Who was the first woman to win a Noble Prize and remains the only person to win Noble Prize in two different scientific fields?

   • ADorothy Crewfoot Hodgkin
   • BBarbara McClintock
   • CMarie Curie
   • DRosalind Franklin
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   Correct answer: (C) Marie Curie

   Marie Curie was the first woman to win a Nobel Prize and remains the only person to win Nobel Prizes in two different sciences: Physics (1903) and Chemistry (1911).

6. Q6

   Name the organ responsible for purification of blood.

   • APancreas
   • BIntestines
   • CKidney
   • DStomach
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   Correct answer: (C) Kidney

   The kidneys filter waste products from the blood and excrete them as urine, purifying the blood.

7. Q7

   What number system is often used in computing and programming?

   • ABinary
   • BHexadecimal
   • COctal
   • DDecimal
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   Correct answer: (A) Binary

   The binary number system, using only 0 and 1, is the fundamental number system used in computing and programming because digital circuits have two states.

8. Q8

   Carrier of Malaria disease is

   • AAedes Mosquito
   • BCulex Mosquito
   • CAnopheles Mosquito
   • DAsian tiger Mosquito
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   Correct answer: (C) Anopheles Mosquito

   Malaria is transmitted by the bite of the female Anopheles mosquito, which carries the Plasmodium parasite. Hence option C is correct.

9. Q9

   Which one is the root vegetable?

   • ACauliflower
   • BCucumber
   • CGourd
   • DCarrot
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   Correct answer: (D) Carrot

   A root vegetable is one where the edible part is the root; carrot is the taproot of the plant, whereas cauliflower, cucumber and gourd are not roots. Hence option D.

10. Q10

    Which of the following is not a metal?

    • AMercury
    • BZinc
    • CSulphur
    • DCopper
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    Correct answer: (C) Sulphur

    Sulphur is a non-metal, while mercury, zinc and copper are all metals. Hence option C.

11. Q11

    Which gas is most abundant in earth's atmosphere?

    • AOxygen
    • BCarbon dioxide
    • CNitrogen
    • DNeon
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    Correct answer: (C) Nitrogen

    Nitrogen makes up about 78% of the Earth's atmosphere by volume, far more than oxygen (~21%), making it the most abundant atmospheric gas. Hence option C.

12. Q12

    Nikola Tesla invented what kind of electricity?

    • AAC
    • BDC
    • CStatic
    • DBall lightening
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    Correct answer: (A) AC

    Nikola Tesla pioneered alternating current (AC) electricity and the AC induction motor, in contrast to Edison's direct current. Hence option A.

13. Q13

    In Bronze, Copper is mixed with

    • ATin
    • BIron
    • CSilver
    • DGold
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    Correct answer: (A) Tin

    Bronze is an alloy of copper and tin, whereas brass is copper and zinc; hence option (a) Tin is correct.

14. Q14

    Name the device used to measure wind speed.

    • AAnemometer
    • BBarometer
    • CManometer
    • DThermometer
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    Correct answer: (A) Anemometer

    Wind speed is measured with an anemometer; a barometer measures pressure and a thermometer temperature, so option (a) is correct.

15. Q15

    Who is known as father of Indian Space Programme?

    • AS. Somnath
    • BSatish Dhawan
    • CVikram Sarabhai
    • DK. Radhakrishnan
    Show answer & solution

    Correct answer: (C) Vikram Sarabhai

    Vikram Sarabhai, founder of the Indian space effort and ISRO's predecessor INCOSPAR, is regarded as the father of the Indian Space Programme, so option (c) is correct.