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Class 9 Mcq

Class 9 Science के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

ScienceThe amount of gas produced by yeast at different temperatures is measured. Which is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceIf fan speed is changed and the drying time of a wet cloth is measured, what is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceA student investigates the effect of study time on test score. What type of variable is the test score?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceWhile testing the effect of salt concentration on whether an egg floats, which variable should be controlled?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceThe time taken by a stone to reach the ground from different heights is measured. What is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceWhile testing the effect of ice-cube size on melting time, what is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceIf the angle of a slope is changed and the speed of a ball is measured, what type of variable is the slope angle?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceWhile testing the water absorption capacity of different brands of paper towels, what should be kept constant?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceIn an investigation, sound intensity is changed and a person's reaction time is measured. Which is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceThe amount of water given to seeds is changed and seedling length is measured. Which is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceA student changes the distance between a magnet and iron nails and counts the nails attracted. What is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceWhile testing the effect of temperature on the rate of evaporation, which is a suitable controlled variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceThe time of oscillation of pendulums with different lengths is measured. Which is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceIn an experiment, the number of batteries is changed and bulb brightness is observed. What is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceIf exercise duration is changed and pulse rate is measured, what type of variable is pulse rate?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceThe wing length of a paper aeroplane is changed and its flight distance is measured. Which should be a controlled variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceThe time taken for milk to turn sour at different temperatures is measured. What is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceA student measures the distance travelled by a toy car on different surfaces. Which is the independent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceWhile testing the effect of salt amount on the boiling point of water, which factor should be kept constant?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11MediumScienceIn an experiment involving light intensity and the rate of photosynthesis, which is the dependent variable?Class 9Exploration: Entering the World of Secondary ScienceVariables in an experimentLevel 11Medium