Published 24 Feb, 2020

30 Important Science GK Questions Set 1

by Nitroquiz Official | GK Quiz

1. The process by which a solid directly turns into a gas is known as?
A. Liquifaction
B. Solidification
C. Gasification
D. Sublimation
2. When a gas changes back to its liquid form, the process is known as
A. Liquifaction
B. Condensation
C. Vapourization
D. Freezing
3. The part of the sun visible through the naked eye is called
A. Ionosphere
B. Stratosphere
C. Photosphere
D. Core
4. Which of the following gases is responsible for global warming?
A. Carbon Dioxide
B. Carbon Monoxide
C. Sulphur Dioxide
D. Nitrogen
5. Which of the following gases is toxic to humans?
A. Oxygen
B. Hydrogen
C. Nitrogen
D. Carbon Monoxide
6. The process by which plants cook their own food in the presence of sunlight and other minerals is known as?
A. Autosynthesis
B. Photosynthesis
C. Carbosynthesis
D. Polysynthesis
7. Which of the given chemical element is not a metal?
A. Iron
B. Tin
C. Cobalt
D. Phosphorus
8. The only metal that's liquid at room temperature is?
A. Bromine
B. Gold
C. Copper
D. Mercury
9. The average human body temperature is about?
A. 100 deg Celsius
B. 57 deg Celsius
C. 37 deg Celsius
D. 0 deg Celsius
10. The filament of an electric bulb is made up of which of the following metals?
A. Constantan
B. Tungsten
C. Silver
D. Copper
11. Which of the following gases causes Brass to get discolored when exposed to air?
A. Oxygen
B. Nitrogen
C. Sulphur Dioxide
D. Hydrogen Sulphide
12. The non-metal that's liquid at room temperature is
A. Mercury
B. Sulphur
C. Bromine
D. Iodine
13. Which of the following allotropes of Carbon is used in making pencil leads?
A. Diamond
B. Graphene
C. Coal
D. Graphite
14. Baking soda is a common name for which of the following chemical compound?
A. Sodium Bicarbonate
B. Sodium Carbonate
C. Sodium Chloride
D. Calcium Hydroxide
15. Washing soda is common name for which of the following compounds?
A. Sodium Bicarbonate
B. Sodium Carbonate
C. Sodium Chloride
D. Calcium Hydroxide
16. Which of the following gases is not considered a Green house gas?
A. Methane
B. Carbon Dioxide
C. Water Vapour
D. Nitrogen
17. Which of the following is the hardest substance?
A. Graphite
B. Diamond
C. Platinum
D. Iron
18. The property of substance to absorb moisture from the air is called?
A. Effervescence
B. Fluorescence
C. Osmosis
D. Deliquescence
19. The process of coating metals with help of electric current is called
A. Electrophoresis
B. Electrolytic Refining
C. Electroplating
D. Spark Welding
20. The variants of chemical elements that differ in relative atomic mass but not in chemical properties are known as ?
A. Allotropes
B. Isobars
C. Isotopes
D. Alloys
21. What change in color will occur if a blue litmus paper is dipped in acid?
A. Blue litmus turns red
B. Blue litmus remains blue
C. Blue litmus turns green
D. Blue litmus turns black
22. Which of the following is the strongest base?
A. Sodium Bicarbonate
B. Sodium Carbonate
C. Soap
D. Caustic Soda
23. Which of the following gas fuels is used in cooking gas LPG cylinders?
A. Methane
B. Ethane
C. Butane
D. Hydrogen
24. Which of the following coatings over surfaces make them non-stick?
A. Graphite
B. Carbon
C. Teflon
D. Nylon
25. Which of the following chemical compounds can effectively remove permanent hardness of water?
A. Potash Alum
B. Chlorine
C. Bleaching Powder
D. Sodium Carbonate
26. Which of the following fuels have a high calorific values?
A. Coal
B. Petrol
C. Wood
D. Kerosene
27. Which of the following acids are used in soft bubbly drinks?
A. Carbonic Acid
B. Citric Acid
C. Sulphuric Acid
D. Hydrochloric Acid
28. Which of the following gases in air causes acid rain to occur?
A. Sulphur Dioxide
B. Nitrogen
C. Hydrogen
D. Methane
29. The temperature at which a substance changes from liquid to gas is called?
A. Melting Point
B. Boiling Point
C. Freezing Point
D. Transformation Point
30. A form of matter which has definite volume but no definite shape is termed as
A. Solid
B. Liquid
C. Gas
D. Plasma

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