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Class 10 · Science
→Which gas is used as a reactant during photosynthesis in plants?
Class 10 · Science
→Hydrogen and oxygen react to form water. Which type of reaction is this?
Class 10 · Science
→When oxygen is removed from a substance, what does the substance generally undergo?
Class 10 · Science
→When oxygen is added to a substance, what is the process called?
Class 10 · Science
→Why should chemical formulae not be changed while balancing a chemical equation?
Class 10 · Science
→What is a chemical equation called when the number of atoms of each element is not the same on the reactant and product sides?
Class 10 · Science
→What does a downward arrow generally show in a chemical equation?
Class 10 · Science
→What does an upward arrow generally show in a chemical equation?
Class 10 · Science
→Which symbol is used to indicate the aqueous state in a chemical equation?
Class 10 · Science
→Which of the following is an indication of a chemical change?
Class 10 · Science
→Which symbol denotes the solid state of a substance in a chemical equation?
Class 10 · Science
→Burning of natural gas is an example of which type of reaction?
Class 10 · Science
→Respiration is considered which type of reaction?
Class 10 · Science
→What can a colour change indicate in a chemical reaction?
Class 10 · Science
→Formation of curd from milk is what type of change?
Class 10 · Science
→Why are chips packets filled with nitrogen gas?
Class 10 · Science
→What is used to prevent rancidity of fats and oils in food materials?
Class 10 · Science
→What is the process called when oils and fats develop an unpleasant smell on exposure to air?
Class 10 · Science
→What is mainly required for rusting?
Class 10 · Science
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