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Q. Two elements which can form a big number of compounds are
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Q. Which among the given is not a compound of calcium?
Q. The number of hydrogen bonds between guanine & cytosine in DNA is
Q. A solution turns blue litmus to red. its pH is likely to be .......
Q. The atoms of the elements having same mass number but different atomic number are called
Q. What is the systematic name of PbO?
Q. Thermal electricity is generated by using which of these ?
Q. Which one of the following polymers is used for making bulletproof material?
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