Chemical Changes and Equations

In balanced chemical equation

${\mathrm{aKMnO}}_4+{\mathrm{bH}}_2{\mathrm{SO}}_4\to {\mathrm{cK}}_2{\mathrm{SO}}_4+{\mathrm{dMnSO}}_4+{\mathrm{eH}}_2\mathrm{O}+\mathrm{f}\left[\mathrm{O}\right]$

When a solution of lead $\left(\mathrm{ii}\right)$ nitrate and potassium iodide are mixed, the yellow precipitate is formed. The precipitate is of

In a balanced chemical equation

$\mathrm{a} \mathrm{Cu}+\mathrm{b} {\mathrm{HNO}}_3 \stackrel{}{\to } c \mathrm{CU}{\left({\mathrm{NO}}_3\right)}_2+\mathrm{d} {\mathrm{H}}_2\mathrm{O} +\mathrm{e} \mathrm{NO}$

Which the set of coefficients that balance the equation.

Which of the following alternative is correct?

${\mathrm{N}}_2\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right)\stackrel{\mathrm{Fe}/\mathrm{Mo}}{\to }2{\mathrm{NH}}_3\left(\mathrm{g}\right)$. Mo in the given reaction is 

How many litres of ${\mathrm{CO}}_2$ at STP will be formed when $100 \mathrm{ml}$ of $0.1\mathrm{M}$ ${\mathrm{H}}_2{\mathrm{SO}}_4$ reacts with excess of ${\mathrm{Na}}_2{\mathrm{CO}}_3$?

If $0.50$ moles of ${\mathrm{BaCl}}_2$ is mixed with $0.20$ moles of ${\mathrm{Na}}_3{\mathrm{PO}}_4$ the maximum number of moles of ${\mathrm{Ba}}_3{\left({\mathrm{PO}}_4\right)}_2$ formed will be 

In order to balance a chemical equation, it is necessary to satisfy the law of

Write values of a, b, and c so that following chemical equation is balanced 

${\mathrm{aH}}_2+{\mathrm{bO}}_2\to {\mathrm{cH}}_2\mathrm{O}$

A chemical equation is said to be balanced if number of 

Which one of the following processes involves chemical reactions?

Which of the following is a balanced chemical equation?$$

What is the value of $\text{'}x\text{'}$ in the given equation?

${\mathrm{Ag}}_2{\mathrm{CO}}_3+\mathrm{xHCl}+{\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}$

The Formation of precipitate in a reaction is represented in the chemical equation by a/an

Which of the following is a physical change?

Which of the following is not a chemical change?

An equation containing an equal number of atoms of each element on both sides of the arrow is called

A substance which brings a chemical change about substance is called 

Aluminium window frames do not corrode away because the aluminium is: 

When chlorine gas is passed through an aqueous solution ofKBr, the solution turns orange brown due to the formation of

A chemist's report on a batch of pharmaceutical products, Aspirin (C9Hp4) (250 mg tablets) and Paracetamol (C8H9NO) (500 mg tablets) indicated a '+0.5%' weight error in each tablet. Due to this error, the consumer gets extra 'x' molecules of aspirin per tablet and extra 'y' molecules of paracetamol per tablet. Choose the 'best' relation between x and y.