HARD
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Which of the following reactions is not balanced:

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Important Questions on Reacting Masses and Chemical Equations

MEDIUM

In balanced chemical equation

aKMnO4+bH2SO4cK2SO4+dMnSO4+eH2O+fO

HARD

If 0.50 moles of BaCl2 is mixed with 0.20 moles of Na3PO4 the maximum number of moles of Ba3(PO4)2 formed will be 

HARD

In a balanced chemical equation

a Cu+b HNO3   c CU(NO3)2+d H2O +e NO

Which the set of coefficients that balance the equation.

Which of the following alternative is correct?

 

HARD
How many litres of CO2 at STP will be formed when 100 ml of 0.1M H2SO4 reacts with excess of Na2CO3?
MEDIUM
 x KCIO3 y KCl + z O2. The respective values of x, y, z are
EASY
In order to balance a chemical equation, it is necessary to satisfy the law of
MEDIUM

The values of stoichiometric coefficients m, x, y and z in the following reaction after balancing are, respectively:

mNH42Cr2O7   xCr2O3+yN2+zH2O

MEDIUM
A chemical equation is said to be balanced if number of 
MEDIUM

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

aH2+bO2cH2O

MEDIUM

Give one example each of a chemical reaction showing the following characteristics.

Evolution of a gas

EASY
The law of constant proportion is involved in balancing of a chemical equation.
MEDIUM
Represent the addition of dilute sulphuric acid to zinc by means of a chemical equation. State the function of the arrow between the reactants & products.
MEDIUM

Give word equations for the following chemical reaction and give the name of the product formed.
Zn+2HCl ZnCl2+H2

EASY
"In a chemical reaction, ______ can neither be created nor can be destroyed."
 
HARD
Which one amongst the following is a complete balanced equation?
EASY

Write the quadrants in which the following points lie:

-4,7

MEDIUM

Write word equations for the following chemical reactions given below.
Also state the observation seen in each case.

Na2SO3+2HCl2NaCl+H2O+SO2