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CBSE->Std 10 Questions

Total Questions 2595
If every oxigen in a water is respire by fishes will that water will became (hydroen because water is made up of h2o hydrogen and oxygen)?
what is chemical reaction
Define rancidity
What is hummus ?
Is 3.24636363.................. a rational or irrational ?
Find the largest no: wich divides 245 & 1029 leaving the reminder 5 in each case.
prove that n square +n is divisible by 2 for every +ve integer n
Find the H.C.F of 468 & 222 & then express it in the form 468x + 22y.
WHAT DO ALL ACIDS AND ALL BASES HAVE IN COMMON
what is meant by non conventional sources of energy?
Shall we not look into the matter? Can you change this into passive voice?
Tell him to leave the office. The sentence may be changed into passive voice.
CAN U TELL ME HOW THE DINOSOURS EXIST FROM THIS WORLD &THE REASON??
WHAT ARE HOMOLOGOUS ORGANS?
what is a black hole
Why does SWEAT stink???
prove that 3+root 2 is irrational.
An army contingent of 616 members is to march behind an army band of 32 members in a parade. the two groups are to march in the same number of columns. what is the maximum number of columns in which they can march?
who is the father of nuclear physics?
Find the HCF of 96 & 404