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Class 10 · Science · Easy
→When two substances combine to form one substance which reaction is identified?
Class 10 · Science · Easy
→According to the law of conservation of mass, which quantity remains the same before and after a chemical reaction?
Class 10 · Science · Easy
→What must not be changed while balancing a chemical equation?
Class 10 · Science · Easy
→What is a chemical equation written before balancing called?
Class 10 · Science · Easy
→Which product is formed when calcium oxide reacts with water?
Class 10 · Science · Easy
→When magnesium oxide is added to water, what is the nature of the resulting aqueous mixture?
Class 10 · Science · Easy
→Why does a magnesium ribbon emit a dazzling white light when it burns?
Class 10 · Science · Easy
→The production of light during a change can indicate what?
Class 10 · Science · Easy
→What does the arrow in a chemical equation show?
Class 10 · Science · Easy
→On which side of a chemical equation are the starting substances that take part in a reaction written?
Class 10 · Science · Easy
→On which side of a chemical equation are the new substances formed in a reaction written?
Class 10 · Science · Easy
→How are substances identified in a chemical reaction?
Class 10 · Science · Easy
→Which is the most appropriate indication that a chemical reaction has occurred in the laboratory?
Class 10 · Science · Easy
→If a colourless gas is evolved in a chemical reaction, is it correct to conclude that no reaction occurred solely because no colour change is seen?
Class 10 · Science · Easy
→What does a decrease in the temperature of the reaction mixture generally indicate during a chemical reaction?
Class 10 · Science · Easy
→What can increase in temperature indicate in a chemical reaction?
Class 10 · Science · Easy
→According to the law of conservation of mass, what happens to the total mass during a chemical reaction in a closed system?
Class 10 · Science · Easy
→What should be changed while balancing a chemical equation?
Class 10 · Science · Easy
→What is the first step in converting a word equation into a chemical equation?
Class 10 · Science · Easy
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