Important Entrance Science Questions

 Today, here is another material for your +2 entrance preparation. Top 25 important science questions has been made by us. Answer as much as you can. Comment if you want the answers as soon as possible.

1. What is the dimensional formula of density?

a) [MLT–2]   b) [ML–1T–2]     c) [ML–3T0]      d) [M–1L3T–2] 

2. Newton’s third law gives:

a) definition of force    b) concept of force     c) measurement of force    d) pairing nature of force 

3. In single movable pulley, V.R. is equal to _____. 

a) 1           b) 2           c) 3             d) 4 

4. If area increases for a certain force, pressure _____.

a) also increases       b) remains same      c) decreases        d) none 

5. A man suffering from shortsightedness should use ____ lens. 

a) concave         b) convex         c) cylindrical         d) spherical 

6. In visible light spectrum, the colour with highest frequency is:

a) blue         b) red         c) violet         d) white 

7. The numerical ratio of velocity and speed is always:

a) =1         b) ≤ 1         c) ≥ 1         d) 2.67 

8. If a gas is heated keeping its volume constant, pressure:

a) decreases     b) increases     c) remains constant     d) increases then decreases 

9. Amount of heat required to raise temperature of 2Kg of water through 4 °C is:

a) 33,600 Joule     b) 16,800 Joule     c) 4200 Joule     d) 8400 Joule 

10. Heat energy is converted into electrical energy by:

a) a generator     b) a dynamo     c) a heater     d) a thermocouple 

11. The element with atomic no. 24 is:

a) Iron     b) Cadmium     c) Chromium     d) Copper 

12. Which device stores charge?

a) Thermocouple         b) Capacitor         c) Rectifier         d) Transformer 

13. The pH value of lemon juice is:

a) 1.5         b) 2.5         c) 3.0         d) 2.0

14. Ozone depletion is mainly due to:

a) chlorofluorocarbon         b) carbondioxide             c) Lead oxide         d) Ammonia 

15. Carbonated water is an example of:

a) solution of solid & liquid     b) suspension     c) solution of liquid and gas     d) colloid

16. Dry acid is another name for:

a) CO2         b) NO2         c) SO2         d) N2O 

17. When CO2 is passed through calcium hydroxide for a long lime?

a) white precipitated is formed     b) soluble calcium bicarbonate is formed

c) CaCO3 is formed                         d) both b and c

18. What is the molecular formula of sodamide?

a) NaNH2         b) NaNO3         c) Na2SO4         d) none 

19. Silver glance is the ore of _____. 

a) Ag         b) Cu         c) Al         d) gold

20. Which one of the following has highest density?

a) Iron         b) Silver         c) Aluminium         d) Gold 

21. The common name of potassium nitrate is:

a) Niter         b) Horn silver         c) Saltpeter         d) Lithopone

22. Rana tigrina is the scientific name of:

a) snake         b) tiger         c) frog         d) bat 

23. Mumps is caused by _____ virus. 

a) Retro         b) Rhino         c) Paramyxo         d) Polio 

24. Respiratory site of a cell is:

a) Nucleus         b) Endoplasmic reticulum         c) Golgi body         d) Mitochondria 

25. Which of the following reproduces by means of vegetative propagation?

a) Hydra         b) Bryophyllum         c) Yeast         d) Rose

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