Basic Science Questions and Answers PDF:- Once you are through with Basic Science Questions and Answers PDF in Hindi, you would be able to answer the majority of the Questions to be asked in the General Science section of the upcoming RRB Group D and RRB NTPC Exams.
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Basic Science Questions and Answers PDF
Q.-1. The force that tends to make a nucleus fly apart?
Ans. Electrostatic repulsion
Q.-2. The process of manufacture of Sulfuric acid is named as what?
Ans. Contact process
Q.-3. What is Tonoplast?
Ans. Tonoplast is the membrane around the plant vacuoles
Q.-4. Which force is responsible to keep the atomic nuclei together?
Ans. Nuclear force only
Q.-5. What is the color of ferric thiocyanate?
Ans. Deep red or blood red
Q.-6. What is the other name of root cap?
Q.-7. How do the electrons move according to the Rutherford model of the atom?
Ans. Electrons orbit the positively charged nuclei.
Q.-8. What is known as a system of reacting substances in which the concentrations of reactants and product do not undergo any change?
Ans. Chemical equilibrium
Q.-9. What is Anemophily?
Ans. It is the pollination by wind
Q.-10. What does the phenomenon of photo-electric emission establish?
Ans. The quantum nature of light.
Q.-11. What is dissociation?
Ans. Reversible decomposition is called dissociation.
Q.-12. What is pollination?
Ans. The transference of pollen grain from the another of a flower to the stigma is known as pollination.
Q.-3. When does the emission of energy take place?
Ans. An electron jumps from the higher orbit to the lower orbit.
Q.-14. Alexander Fleming invented .
Q.-15. Who is credited for producing first man-made Gene in a lab?
Ans. Dr. Hargobind Khurana
Basic Science Questions and Answers PDF in Hindi
Q.-16. Xerophthalmia is a disease caused by lack of which vitamin?
Ans. Vitamin A
Q.-17. What is the color of Phenolphthalein in sodium hydroxide solution?
Q.-18. What is Clinostat?
Ans. Clinostat is an apparatus used to demonstrate photoperiodism.
Q.-19. What did Rutherford’s gold foil experiment prove?
Ans. Positively charged protons are contained in the nucleus of the atom.
Q.-20. Which substance obtained on cooling the vapor produced on heating ammonium chloride?
Ans. Ammonium chloride
Q.-21. Name the process by which terrestrial plant loses water?
Q.-22. What are Alpha particles?
Ans. Helium nucleus
Q.-23. When temperature is decreased the speed of the reaction increases. Which was the action?
Q.-24. What is the term used for the occurrence of more than one type of morphologically different leaves on the same plant?
Q.-25. In which country the hormone gibberellin was discovered?
Q.-26. Where is installed the most powerful accelerator, the atom smasher?
Ans. Illinois, USA.
Q.-27. A factor which is unable to alter the equilibrium state of reactions in which only solids or liquids are present is?
Q.-28. Name the natural process involving loss of water from a plant in the form of liquid drops.
Q.-29. What is the measuring unit of length of light waves?
Q.-30. A short duration wave is known as –
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Q.-31. When did Einstein propose that matter can be converted into energy?
Q.-32. Where in India is cyclotron, the particle accelerator machine installed?
Q.-33. What is the compound used to in Nail polish remover?
Q.-34. Natural rubber is a polymer derived from .
Q.-35. Chemical equilibrium is said to be dynamic in nature. Why?
Ans. Because even after reaching equilibrium forward and backward reactions are taking place at the same rate.
Q.-36. What is the technical name of the natural opening in the leaves meant for gaseous exchange?
Q.-37. is also called White Gold.
Q.-38. Which is the purest form of Iron?
Ans. Wrought Iron
Q.-39. Which Ore is used to extract Radium?
Q.-40. X-rays consists of what?
Ans. Electromagnetic radiations
Q.-41. What must be constant for the system to reach equilibrium?
Q.-42. What are Heliophytes and Sciophytes?
Ans. Heliophytes are plants that grow in full sunlight, Sciophytes are plants that grow in shade.
Q.-43. What are cosmic rays?
Ans. High energy particles
Q.-44. What do you understand by chemical equilibrium?
Ans. The stat of a system of reacting substances in which the concentration does not change is called chemical equilibrium.
Q.-45. Name the four insectivorous plants.
Ans. 1. Drosera, 2. Dionaea, 3. Aldrovanda, 4. Utricularia.
Science Questions and Answers PDF
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