StudentAidUnit 4: Unit 4: Stoichiometry — Mcqs
9th Class Chemistry · Unit 4: Stoichiometry
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Multiple Choice Questions (Exercise)
1.How many atoms are present in one gram of H2O?
2.Which is the correct formula of calcium phosphide?
3.How many atomic mass units (amu) are there in one gram?
4.Structural formula of 2-hexene is CH3-CH=CH-(CH2)2CH3. What will be its empirical formula?
5.How many moles are there in 25 g of H2SO4?
6.A necklace has 6g of diamonds in it. What are the number of carbon atoms in it?
7.What is the mass of Al in 204g of aluminium oxide, Al2O3.
8.Which one of the following compounds will have the highest percentage of the mass of nitrogen?
9.When one mole of each of the following compounds is reacted with oxygen, which will produce the maximum amount of CO2?
10.What mass of 95% CaCO3 will be required to neutralize 50 cm3 of 0.5M HCl solution?
SLO Based Additional MCQ's
Chemical Formula
11.Formula of ozone is:
12.Avogadro was a scientist:
13.Which of the following is insoluble salt
14.Stoichiometric calculators are used to prepare
15.Without stoichiometry which industry cannot exist
16.Which law is obeyed in chemical calculations?
Empirical Formula
18.Empirical formula of glucose is:
19.Empirical formula of acetic acid (CH3COOH) is:
20.Which of the following represents sand?
21.Empirical formula of hydrogen peroxide is:
22.Empirical formula of Benzene is:
Chemical Formulas of Binary Ionic Compounds
23.Which compound has same molecular and empirical formula?
24.Formula of sulphate radical is:
Avogadro's Number (NA)
25.Value of Avogadro's number is:
The Mole and Molar Mass
26.1 gram formula of NaCl contains grams:
27.1-gram atom of carbon contains how many moles?
28.Formula of common salt is:
Chemical Equations and Chemical Reactions
29.Formula mass of K2SO4 is:
30.Molecular mass of acetic acid is:
31.No. of formula units present in 58.5 g of NaCl are:
32.Number of hydrogen atoms present in 18g of water:
33.The mass number of sodium is:
Calculations Based on Chemical Equation
34.Total number of ions present in one mole of sodium chloride is:
35.Limestone is another name of:
36.Mass of 3 moles of oxygen atoms is:
37.How many molecules of water will be present in half mole of water?
38.Number of moles in 29.25g NaCl is:
39.How many atoms of carbon are present in one molecule of glucose?
40.How many atoms are present in one gram atomic mass of a substance?
41.40 g of H3PO4 contains number of moles:
42.A compound with chemical formula Na2CX3 has formula mass 106amu. Atomic mass of the element X is:
43.How many moles of molecules are there in 16g oxygen:
44.What is the mass of 4 moles of hydrogen gas?
45.Which term is the same for one mole of oxygen and one mole of water?
46.If one mole of carbon contains x atoms, what is the number of atoms contained in 12g of Mg.
47.The mass of one molecule of water is:
48.The molar mass of H2SO4 is:
49.Which one of the following is molecular mass of O2 in amu?
50.How many number of moles are equivalent to 8 grams of CO2?
51.Which one of the following pairs has the same number of ions?
52.Which one of the following pairs has the same mass?