Atoms and Molec...

In an experiment, $$2.4\  g$$ of iron oxide on reduction with hydrogen gave $$1.68\  g$$ of iron. In another experiment, $$2.69\  g$$ of iron oxide gave $1.88 \ g$ of iron on reduction. Which law is illustrated from the above data?

Which of the following correctly represents 180 g of water?
(i) 5 moles of water
(ii) 10 moles of water
(iii) $6.023 \times 10^{23}$ molecules of water
(iv) $6.023 \times 10^{24}$ molecules of water

The mass of one mole of  a substance in gram is called its:

If water samples taken from the sea, rivers, lakes or snow-capped mountains, are found to contain hydrogen and oxygen in the ratio of $1: 8$. This demonstrates:

An atom can be smashed and broken into many nuclear particles by the high acceleration (increasing speed) imparted in:

Which of the following statements is incorrect?

The number of atoms present in $16g$ of oxygen is:

The density of a gaseous substance at 1 atm pressure and 773 K is 0.4g/lit. If the molecular weight of the substance is 30 the forces existing among gas molecules are?

$0.1g \ CaCO_3$ will contain:

What mass of sodium chloride will react with 34.0 g of silver nitrate to produce 17 g of sodium nitrate and 28.70 g of silver chloride if the law of conservation of mass holds good ?