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What do you understand by 4R principal
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1
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6430
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June 18, 2019
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Can you give the example of spontaneous combustion, rapid combustion, and explosion
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1
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12812
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June 17, 2019
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Make sketches of animal and plant cells. State three differences between them
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0
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4439
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March 24, 2018
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State the differences between eukaryotes and prokaryotes
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0
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49549
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March 24, 2018
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Write short notes on the following. Cytoplasm Nucleus of a cell
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0
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12905
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March 24, 2018
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The size of the cells of an organism has no relation with the size of its body
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0
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4320
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March 24, 2018
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Why do plant cells have an additional layer surrounding the cell membrane?
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0
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2938
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March 24, 2018
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Cells consist of many organelles, yet we do not call any of these organelles as structural and functional unit of living organisms
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0
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5554
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March 24, 2018
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Explain why chloroplasts are found only in plant cells
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0
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14864
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March 24, 2018
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‘Cells are the basic structural units of living organisms’
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0
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15337
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March 24, 2018
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Where are chromosomes found in a cell? State their function
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0
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3601
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March 24, 2018
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Make a sketch of the human nerve cell. What function do nerve cells perform?
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0
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12412
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March 24, 2018
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Salma takes 15 minutes from her house to reach her school on a bicycle. If the bicycle has a speed of 2 m/s, calculate the distance between her house and the school
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0
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3981
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March 23, 2018
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The distance between two stations is 240 km. A train takes 4 hours to cover this distance. Calculate the speed of the train
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0
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16041
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March 23, 2018
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A simple pendulum takes 32 s to complete 20 oscillations. What is the time period of the pendulum?
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0
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2026
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March 23, 2018
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With the help of an activity, explain how will you measure the time period of a simple pendulum
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0
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4356
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March 23, 2018
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Figure shows the distance-time graph for the motion of two vehicles A and B. Which one of them is moving faster?
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0
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8749
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March 23, 2018
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The odometer of a car reads 57321.0 km when the clock shows the time 08:30 a.m
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0
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7573
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March 23, 2018
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Boojho goes to the football ground to play football
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0
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2712
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March 23, 2018
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Distance between Bholu’s and Golu’s house is 9 km
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0
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4593
|
March 23, 2018
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Given below as figure is the distance-time graph of the motion of an object
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0
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3746
|
March 23, 2018
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Show the shape of the distance-time graph for the motion in the following cases
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0
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7313
|
March 23, 2018
|
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Suppose the two photographs, shown in figures given below
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0
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958
|
March 23, 2018
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Classify the following as motion along a straight line, circular or oscillatory motion
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0
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819
|
March 23, 2018
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Plot a distance-time graph of the tip of the second hand of a clock by selecting 4 points on x-axis and y-axis respectively. The circumference of the circle traced by the second hand is 64 cm
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0
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5796
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March 23, 2018
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Starting from A, Paheli moves along a rectangular path ABCD as shown in figure below. She takes 2 minutes to travel each side. Plot a distance-time graph and explain whether the motion is uniform or non-uniform
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0
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9218
|
March 23, 2018
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A spaceship travels 36,000 km in one hour. Express its speed in km/s
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0
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2580
|
March 23, 2018
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Complete the data of the table given below with the help of the distance-time graph given in figure
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0
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2271
|
March 23, 2018
|
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Explain with the help of an example that the states of rest and motion are relative terms
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0
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1511
|
March 23, 2018
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Distinguish between uniform and non-uniform motion
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0
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1341
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March 23, 2018
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