📘 Study MCQs Q1. When two plane mirrors are placed at an angle to each other, the number of images formed is given by the formula: A. (360 / angle) − 1 B. (360 / angle) + 1 C. (180 / angle) − 1 D. (180 / angle) + 1 AnswerA. (360 / angle) − […]
📘 Study MCQs Q1. The first law of reflection states that: A. Angle of incidence is always greater than angle of reflection B. Angle of incidence is always less than angle of reflection C. Angle of incidence is equal to angle of reflection D. Angle of incidence and angle of reflection add up to 90
📘 Study MCQs Q1. The formula to calculate time taken when distance and speed are known is: A. Time taken = Distance × Speed B. Time taken = Distance / Speed C. Time taken = Speed / Distance D. Time taken = Distance + Speed AnswerB. Time taken = Distance / SpeedDetails CloseSpeed is defined
📘 Study MCQs Q1. The primary unit of speed in the SI system is: A. metre per second B. kilometre per hour C. metre per minute D. centimetre per second AnswerA. metre per secondDetails CloseIn the SI system, the standard unit for measuring speed is metre per second, written as m/s. Here, metre is the
Q1. The Earth revolves around the Sun. True False Q2. Sound can travel through a vacuum. True False Q3. Water boils at 100°C at sea level. True False Q4. Plants produce oxygen during photosynthesis. True False Q5. The chemical symbol for sodium is Na. True False Q6. Humans have three hearts. True False Q7. Light
Q1. The Earth revolves around the Sun. True False Q2. Sound can travel through a vacuum. True False Q3. Water boils at 100°C at sea level. True False Q4. Plants produce oxygen during photosynthesis. True False Q5. The chemical symbol for sodium is Na. True False Q6. Humans have three hearts. True False Q7. Light
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TOTAL NUMBER OF QUESTIONS:30 Exam Q1. In a balanced chemical equation, the number of atoms of each element is: A. Different on both sides B. Same on both sides C. More on LHS D. More on RHS Q2. Which law is followed while balancing chemical equations? A. Law of conservation of mass B. Law of
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Exam Q1. The acidic nature of acids is due to the presence of: A. Hydrogen ions B. Chloride ions C. Sulphate ions D. Oxygen ions Q2. Adding water to concentrated acid is dangerous because: A. Heat may cause splashing B. Acid evaporates C. Acid neutralises D. Ions decrease Q3. Curd should not be stored in
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Exam Q1. The chemical name of lime water is: A. Calcium hydroxide B. Calcium chloride C. Calcium carbonate D. Calcium oxide Q2. All metal carbonates react with acids to give: A. Salt and oxygen B. Salt and hydrogen C. Salt and base D. Salt, carbon dioxide and water Q3. Lime water test is used to
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