Question 21 Mark0.0046 can be written as__________in scientific notation.Answer$4.6 \times 10^{-3}$View full question & answer→
Question 31 MarkThe unit of mole fraction is__________.Answerweight-weightView full question & answer→
Question 41 MarkThe value of Avagadro number is__________.Answer$6.022 \times 10^{23}$View full question & answer→
Question 51 MarkThe molecular mass of $H _2 SO _4$ is 98 . Its equivalent weight will be. __________Answer49View full question & answer→
Question 71 Mark${ }_{18} Ar ^{20}$ and ${ }_{20} Ca ^{40}$ are__________.Answerisobars View full question & answer→
Question 91 MarkThe element present in diamond is__________.Answercarbon View full question & answer→