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HPSC 2022 — Science & Technology Questions with Answers

All 7 Science & Technology previous-year questions from HPSC 2022, each with the correct answer and a full explanation. Practise them as a free, timed mock test with instant scoring.

1. Q1.Biology

   Consider the following statements about Yeast : 1. Yeast are fungi. 2. Yeast can form pseudomycelium. 3. Yeast reproduce asexually by budding. 4. Yeasts are facultative anaerobes. 5. All Yeasts are dimorphic. 6. All Yeasts are pathogenic. Which of the above are correct ?

   • a)1, 2, 3, 4
   • b)1, 2, 3, 6
   • c)3, 4, 5, 6
   • d)2, 3, 4, 5
2. Q2.Space Missions

   Given below are two statements: Statement - I : Chandrayaan-2 was launched on July 22, 2019, from Sriharikota by a Geosynchronous Satellite Launch Vehicle Mark III. The spacecraft consisted of an orbiter, a lander, and a rover. Statement - II : The orbiter will circle the Moon in a polar orbit at a height of 100 km (62 miles). In the light of the above statements, choose the most appropriate answer from the options given below

   • a)Both Statement - I and Statement - II are correct
   • b)Both Statement - I and Statement - II are incorrect
   • c)Statement - I is correct but Statement - II is incorrect
   • d)Statement - I is incorrect but Statement - II is correct
3. Q3.Chemistry in Everyday Life

   Which of the following is not a preservative?

   • a)Dulcin
   • b)Potassium metabisulphite
   • c)Sodium benzoate
   • d)Sorbic acid salts
4. Q4.Renewable Energy

   Given below are two statements: one is labeled as Assertion (A) and the other is labeled as Reason (R) Assertion (A) : Biogas contains large amounts of methane which can be used as a fuel for several purposes. As it releases no smoke or residue, it should be considered as a good and safe source of energy. Reason (R) : Biogas also contains carbon dioxide and the higher content of carbon dioxide contributes to lower energy of biogas in comparison to natural gas. In the light of the above statements, choose the most appropriate answer from the options given below:

   • a)Both (A) and (R) are correct and (R) is the correct explanation of (A)
   • b)Both (A) and (R) are correct but (R) is not the correct explanation of (A)
   • c)(A) is correct but (R) is not correct
   • d)(A) is not correct but (R) is correct
5. Q5.Electricity

   Which of the following is (are) true in respect of the electric current used at your home? i. Microwave Oven and television uses dc current ii. Refrigerator and washing machine uses ac current iii. Air cooler and air conditioner uses ac current iv. Most of the devices use 220 ampere current v. Magnitude of current passing through different devices is same

   • a)Only i, ii and iv
   • b)Only ii and iii
   • c)Only iii and iv
   • d)Only ii, iii, iv and v
6. Q6.Magnetism

   Consider the following statements : Statement - I : The magnetic field lines emerge from the north pole and merge at the south pole of a bar magnet. Statement - II : The direction of magnetic field is taken to be the direction in which the north pole of a compass needle moves. Statement - III : There is no field inside a bar magnet. Statement - IV : The relative strength of the magnetic field is shown by the degree of closeness of the field lines. Which of the above statement(s) is/are correct?

   • a)Statements - I, II, III and IV
   • b)Statements - I, II, and III
   • c)Statements - I, II and IV
   • d)Statements - II, III and IV
7. Q7.Electromagnetism

   Consider the following statements : Statement - I : An electric motor converts electrical energy into mechanical energy. Statement - II : An electric generator converts mechanical energy into electrical energy. Statement - III : Both electric motor and generator work on the same principle. Which of the above statement(s) is/are correct?

   • a)Statements - II and III
   • b)Statements - I and III
   • c)Statements - I and II
   • d)Statements - I, II and III