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CBSE Questions

Total Questions 9982
the sides of triangle are in the ratio 1;2;3 if the perimeter is 36cm find its side ?
a) x:96 = 16 : 18 b) x:92 = 87 : 116
a car can cover a distance of 522km on 36 liters of petrol. how far can it travel on 14 liters of petrol?
Describe how ants live together in colonies?
can you tell me who is the governor of kerala?/
1. A cyclist takes 2 hrs less to cover a distance of 200km if he increases his speed by 5km/h. Find his original speed. 2. A year ago, a man's age was 8 times his son's age. Now his age is equal to the square of his son's age. Find their present ages. 3. A motorboat whose speed in still water is 15km/hr goes 30km downstream and returns to the starting point in a total time of 4 hrs and 30 minutes. Find the speed of the stream.
what is photosynthesis?
why smoke rises up?
why sky is blue in colour?
Which gases are involved in global warming? what is the gases in our environment?
what is global warming?
what is green house effect?
Explain the terms - flame,fuel,ideal fuel,calorific value.
What are the differences between intra-cloud lightning and inter-cloud lightning ?
Explain test-tube babies.
Explain embryo.
Find the volume of a cuboid of length 12cm breadth 7cm and height 9cm ?
The length and breadth of a rectangular piece of land are 500m and 300m respectively. (1) its area (2)the cost of the land,if 1m square of land costs Rs 10,000
briefly explain solar power through photovoltaic cells as an strategies for sustainable development?
briefly eplain wind power as an strategies for sustainable development?