30 science quiz questions and their answers - see how much you know!

Science quiz questions and their answers

Are you a science enthusiast? Test your knowledge with these 30 science quiz questions and their answers! From biology and physics to chemistry and astronomy, this quiz covers a wide range of topics that are sure to challenge and excite science-lovers. Whether you’re a student studying for an upcoming exam or simply curious about the world around us, these science quiz questions will help you broaden your understanding of the natural world. Ready to see how much you know? Let’s get started!

Table of contents

1. Why do you know science
2. Advantages of knowing science !
3.  Read the questions and answers below and increase your knowledge

1) Why do you know science  ?

Knowing science is an essential part of living in the modern world. Science is used in everyday life, from the food we eat to the way we power our homes and devices. Understanding science helps us make informed decisions that impact our lives and those of others. 

On a more fundamental level, science helps us understand how the universe works. By learning about physics, chemistry, biology, and other fields of science, we can gain insight into the way things move, grow, and interact with one another. Science also helps us understand our place in the universe, by giving us a deeper appreciation for the beauty and complexity of the natural world.

Finally, studying science can help cultivate our minds and expand our knowledge base. The study of science challenges us to think critically, solve complex problems, and explore new ideas. It can also encourage us to become more creative in our daily lives, from coming up with innovative solutions to our day-to-day problems to developing new ways to use technology. In this way, science can provide us with a platform for personal growth and exploration. 

In conclusion, there are many reasons to learn about science. Knowing science can help us make better decisions, better understand the universe around us, and foster our creativity. For these reasons, it’s an important subject to study and an essential part of life in the modern world.

Related quiz - Science general knowledge quiz

2) Advantages of knowing science !

Learning science can help us to better understand and appreciate the world around us. Knowing science can open up many new possibilities and opportunities, as having a good understanding of science is essential for many professions.

One of the biggest advantages of knowing science is that it helps us think more critically and logically. It helps us to analyse complex problems and develop informed opinions about them. Science can also provide us with evidence-based arguments and solutions, which we can use to challenge our own assumptions and beliefs. 

Knowing science also gives us the opportunity to pursue many exciting career paths, from engineering to research and development. Science is also essential for making informed decisions in everyday life. Being knowledgeable about scientific topics such as nutrition and the environment can help us make healthier choices and be more conscious about our impact on the planet.

Finally, having a good grasp of science can also be incredibly rewarding for its own sake. Exploring the wonders of our universe through science can be a hugely satisfying experience, and knowing science can also lead to exciting new discoveries.

3) Read the questions and answers below and increase your knowledge

1. Select the bio molecule which contains Phosphorous as an element.

(i) Protein

(iii) Lipid 

(ii) Carbohydrate

(iv) Nucleic acid

Answer :(iv) Nucleic acid

2. The element which shows electronic configuration 2,5, is,

(i) Boron

(ii) Oxygen

(iii) Nitrogen

(iv) fluorine

Answer :(iii) Nitrogen

3. The unit of momentum is,

(i) J 

(ii) N 

(iii) Nm 

(iv) Nm-2

Answer :(iii) Nm

4. The relative molecular mass of MgSO4 is, (O-16, Mg-24, S-32)

(i) 60 

(ii) 104 

(iii) 120 

(iv) 144

Answer :(iii) 120

5. The relative molecular mWhen an object of mass m, travels in a uniform velocity of V, the momentum of the object is,

(I) 1/2mv 

(ii) 1/2mv 

(iii) mv2

(iv) mv

Answer :(iv) mv

6. The domain which include organisms which can be destroyed by antibiotics.

(I) Eukarya 

(ii) Bacteria 

(iii) Archea 

(iv) Protista

Answer :(ii) Bacteria 

7. If the neutral atom of x contains 19 electrons, the ion similar to it when an electron is released from X atom is,

(i) K+ 

(ii)CI- 

(iii) Ca2+ 

(iv) S2-

Answer :(i) K+ 

8.The resultant of forces means,

(i) The total number of forces acting on an object

(ii) The result of all the forces acting on an object

(iii) The single force that gives the same result as that of all the contributing forces.

(iv) The total magnitude of all the forces acting on an object

Answer :(iii) The single force that gives the same result as that of all the contributing forces.

9. The answer which shows the places where fertilization and implantation occur respectively is,

(i) Ovary and Uterus 

(ii) Fallopian tube and Uterus

(iii) Fallopian tube and Ovary 

(iv) Uterus and fallopian tube

Answer :(ii) Fallopian tube and Uterus

10. CaCl2+Na2CO3 ? yCaCO3 + x NaCl According to the above equation the values of x and y respectively are,

(i) 2 and 2

(ii) 2 and 1 

(iii) 1 and 2 

(iv) 1 and1

Answer :(iii) 1 and 2 

11. Several strategies used to increase friction are given below

a) Making grooves at the sole of shoes

b) Grooves are etched on the surface of tyres

c) Making the rubber break pads rough.

Out of the above, the strategies use to make the motion easy are,

(i) a and b only (ii) b and c only (iii) c and c only (iv) a,b, c all

Answer :(i) a and b only

12. The factor of water which is not important to maintain the life is,

(I) Having less melting point 

(ii) Having high specific heat capacity.

(iii) Being a good solvent 

(iv) Being a medium of transport.

Answer :(I) Having less melting point

13. Answer which shows the correct isotope of carbon is,

(I) 6 12C 613C 

(ii) 126C 136C 

(iii) 126C 127C 

(iv) 126C 712C

Answer :(ii) 126C 136C

14. Astudent started the motion at A, traveled half of the circumference of a circle with radius 14m and stopped at B. Select the answer which shows distance and displacement.

(I) 14m and 14m 

(ii) 44m and 28m 

(iii) 44 and 44m 

(iv) 88m and 44m

Answer :(ii) 44m and 28m 

15. Given below are some answers received as the t factors needed for photosynthesis. The correct answer is,

(I) Carbon dioxide, Oxygen, Sunlight, Water

(ii) Chloroplast, Carbon dioxide, Oxygen, Water

(iii) Water, Sun light, Glucose, Chloroplast 

(iv) Carbon dioxide, Sun light, Water, Chloroplast.

Answer :(iv) Carbon dioxide, Sun light, Water, Chloroplast.

16. Select the double displacement reaction.

(I) CaCl +Na CO ? CaCO +2NaCl

(iii) CuSO4 + Zn ? ZnSO4 +Cu?

(ii) Mg+H O ? MgO + H

(iv) CaO+ H2O ? Ca(OH)2

Answer :(I) CaCl +Na CO ? CaCO +2NaCl

17. Several statements regarding an object put into a liquid are given below

(a) Decreasing the density of the object than density of liquid

(b) Increasing the weight of the object than the upthrust

(c) Equaling the weight of the object to upthrust.

Out of the above statements, which are always correct about floating object

(I) a and b only (ii) b and c only (iii) a and c only (iv) a,b, c all

Answer :(iii) a and c only

18. What is the element which forms an ionic compound by combing with chlorine with a +2 charge ?

(I) Sodium 

(ii) Sulphur 

(iii) Aluminum 

(iv) Magnesium

Answer :(iv) Magnesium

19. How much is the gravitational potential energy containing in an object of mass 50kg moving to a height of 40 cm from the ground level? (g = 10 ms-2)

(I) 50 x10 J /40

(ii) 50 x 40 J /10

(iii) 50 x 10 x 40 J 

(iv) 40 x10 J /50

Answer :(iii) 50 x 10 x 40 J 

20. Which diagram illustrates the Lewis structure of hydrogen molecule?

(i) H : H 

(ii) H - H 

(iii) H x H 

(iv) H : H

Answer :(ii) H - H

21. A hydrometer was put in to a liquid and measured the density of a liquid The correct observation and reason are,

Observation	Reason
(i) Hydrometer immersing more	(I) Density of the liquid is less and volume of water displaced is less.
(ii) Hydrometer immersing less	(ii) Density of the liquid is high and volume of water displaced is less.
(iii)Hydrometer immersing more	(iii)Density of the liquid is high and amount of water displaced is high.
(iv)Hydrometer immersing less	(iv)Density of the liquid is less and amount of water displaced is high.

Answer :(ii) Hydrometer immersing less and Density of the liquid is high and volume of water displaced is less.

22. Select the correct answer which gives the scientific name for the Jungle fowl

(I) GALLUS LAFAYETII 

(ii) GALLUS Lafayetii

(iii) Gallus lafayetii 

(iv) gallus Lafayetii

Answer :(iii) Gallus lafayetii 

23. 3 moles of A and 12 moles of B are contained in a mixture of A and B. Mole fraction of B is,

(I) 0.8 

(ii) 0.6 

(iii) 0.2 

(iv) 0.12

Answer :(I) 0.8

24. The equation which can be used to find the resistance according to the ohm's law

(I) I = R /V

(ii) I = VR 

(iii) V = I /R

(iv) V = IR

Answer :(iv) V = IR

25. Consider the following statements

(a) Only Parenchyma and collenchyma are simple permanent tissues.

(b) Phloem tissue is a simple permanent tissue, but xylem tissue is not a simple permanent tissue.

(c) Panenchyma tissue is a simple permanent tissue

The incorrect statements are,

(I) a only 

(ii) b only 

(iii) a and b only 

(iv) b and c only

Answer :(iii) a and b only

26. Which statement is correct about the factors affecting solubility

(i) Nature of the solute and nature of the solvent are affected only

(ii) Nature of the solute, nature of the solvent and temperature are affected only.

(iii) No effect of nature of solute and solvent.

(iv) Nature of the solvent and temperature are only affected factors.

Answer :(ii) Nature of the solute, nature of the solvent and temperature are affected only.

27. The necessity that should be to balance an object under 03 forces which are not parallel

(I) Resultant of two forces should be equal to the magnitude of other force.

(ii) The direction of the resultant of two forces should be equal or parallel to the direction of other force.

(iii) The addition of 3 forces is equal to the resultant of two force.

(iv) Two forces are single pointed and other force exists in an other point.

Answer :(I) Resultant of two forces should be equal to the magnitude of other force.

28. Not a disease associated with kidney.

(I) Atherosclerosis

(ii) Stones in the kidney

(iii)  Nephritis

(iv) Failure of the kidney

Answer :(I) Atherosclerosis

29. Number of moles of which substance is similar to the number of moles of 11 g of carbon dioxide ,

(C -12, H- 1, O-16, Na—23, Cl-35.5, N-14)

(I) 45g of glucose 

(ii) 29.25g sodium chloride 

(iii) 13.5g of water 

(iv) 60g of urea

Answer :(I) 45g of glucose

30. Select the incorrect statements about human menstrual cycle,

(I) At the first 14 days of the menstrual cycle oestrogen hormone is released from the ovary.

(ii) Oestrogen hormone level is high at the last 14 days of the menstrual cycle.

(iii) There is no effect of the oestrogen hormone in the proliferation phase of the uterus.

(iv) There is an effect of progesterone hormone for the secretory phase of menstrual cycle.

Answer :(iii) There is no effect of the oestrogen hormone in the proliferation phase of the uterus.