Question

Assertion (A): The mass of canal rays is about 2000 times as that of the neutron. Reason (R): Canal rays are positively charged radiations that consist of particles having charges equal in magnitude but opposite in sign to that of the electron. They are also known as Anode rays.

The mass of one steel screw is 4.11g. Find the mass of one mole of these steel screws. Compare this value with the mass of the Earth (5.98 × 10²⁴kg). Which one of the two is heavier and by how many times?

In photosynthesis, 6 molecules of carbon dioxide combine with an equal number of water molecules through a complex series of reactions to give a molecule of glucose having a molecular formula C₆H₁₂O₆. How many grams of water would be required to produce 18 g of glucose? Compute the volume of water so consumed assuming the density of water to be 1 g cm⁻³.

Which one of the following has maximum number of atoms?