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CBSE->Std 10 Questions

Total Questions 2595
Is the animals of prey have two eyes on the sides?
what are rod cells?
what are cone cells?
how the size of pupil of eye is adjusted?
WHAT IS REFRACTIVE INDEX OF GLASS PRISM?
what is known as alpha particles?
CHANGE THE DIRECT SPEECH INTO INDIRECT SPEECH. Varun:How long will you be there? Swaroop : For about a week. Varun asked how long he would be there.Swaroop replied (D)_____________ a week.
What is reported speech?
1)Why does the sky appear dark instead of blue to an astronaut?
it is said that no. of electrons in a shell is given by the formula 2n square. but it is also said that outer most shell should contain 8 electrons only .why is it so?
what are the uses of nephron?
what are the advantages and disadvantages of democrazy
why we wanted to study history
Name the product formed when ethyle ethanoate is treated with NAOH solution. Also write the chemical equation.
Differentiate between pollen grain and ovule.
State the functions of copper-T used by women.
Draw the structure of ethyne (C2H2)
Draw the structures of isomers of butane and name them.
Elements of group 18 are called zero valent .
What happens to a ray of light when it travels from one medium to another having equal refractive indices?