Methane contributes towards global warming so it is called a _________________ gas.

 

Atomic number of which of the following elements is greater than that of Zinc

Which of the following statements about the reaction below are INCORRECT?

2Pb + C → 2Pb + CO2

A. Carbon di-oxide is getting, oxidised
B. Lead is getting reduced
C. Carbon is oxidised
D. Lead oxide is getting reduced

A solution contains 33 g of common salt in 320 g of water. Calculate the concentration in terms of mass, by mass percentage of the solution.

............ element is represented by the given symbol.

Calculate the relative molecular mass of water H2O?

Potassium Permanganate is used for purifying drinking water, because________

Which is the only non-metal placed at the left side of the Modern Periodic Table?

There are ............ metalloids in the modern periodic table.