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CBSE->Std 9 Questions

Total Questions 1962
If E and F are the two mid-points of the non-parallel sides of a trapezium ABCD respectively,then show that EF=1/2(AB+DC).
A teak wood log is cut first in the form of cuboid of length 2.3 metre,width 75 cm and of certain thickness.It's volume is 1.104 cubic metre.How many rectangular planks of size 2.3 metre,375 cm,34 cm can be cut from the cuboid ?
explain why objects moving in fluids must have special shapes?
Chalk contains calcium,carbon and oxygen in the ratio 10:3:12 find the weight of the chalk if carbon is 3 gram?
how can we write about the nitrogen , carbon and oxygen cycles for 5 mark question?
what do you mean by monsoon?
Where does the fertilization and development of embryo takes place?
How many nuclei are present in a zygote?
Difference between zygote and foetus?
Differences between external fertilization and internal fertilization?
Give differences between binary fission and multiple fission?
Where does the fertilization and development of embryo takes place?
Why are lysosomes called suicidal bags of a cell?
What is meant by poaching?
When was the first 'leg-before law' published?
Why is the Indian constitution called a living document
Essay on sanitation
an essay for the topic 'sports'.
Important endocrine glands and exocrine glands and their function?
Define pathogens?