AP-EAPCET SERIES Chemistry
Stoichiometry And Stoichiometric Calculations
18 previous year questions.
Volume: 18 Ques
Yield: Medium
High-Yield Trend
11
2025 1
2024 5
2023 1
2019 Chapter Questions 18 MCQs
01
PYQ 2019
easy
chemistry ID: ap-eapce
The volume of acidified permanganate solution required for complete reaction of of ion solution to form in is
1
60
2
20
3
40
4
6
02
PYQ 2023
medium
chemistry ID: ap-eapce
In neutral or faintly alkaline medium, oxidizes to iodate. What is the number of moles of required to completely convert 1 L of 0.5 M KI to iodate?
1
0.5
2
4.0
3
2.0
4
1.0
03
PYQ 2023
medium
chemistry ID: ap-eapce
The weight percentage of C and H in a hydrocarbon is in the ratio of 4:1. What is its empirical formula?
1
CH
2
CH
3
CH
4
CH
04
PYQ 2023
medium
chemistry ID: ap-eapce
x g of methane was burnt completely in the presence of oxygen. The liberated gases were passed into a solution containing 370 g of Ca(OH) . The weight of white precipitate obtained was 500 g. What is the value of x (in g)? (Given : C = 12; H = 1; Ca = 40; O = 16 u)
1
16
2
80
3
160
4
120
05
PYQ 2023
medium
chemistry ID: ap-eapce
Observe the following reaction
x, y and z are respectively.
1
1, 12, 2004
2
1, 12, 2002
3
1, 4, 12
4
2, 12, 2
06
PYQ 2023
medium
chemistry ID: ap-eapce
48 g of methane was completely burnt in the presence of oxygen. The liberated gas was passed into a solution containing 370 g of Ca(OH) . What is the weight (in g) of CaCO formed?
(Atomic weights: C = 12, H = 1, Ca = 40, O = 16)
(Atomic weights: C = 12, H = 1, Ca = 40, O = 16)
1
500
2
400
3
300
4
200
07
PYQ 2024
easy
chemistry ID: ap-eapce
A solid compound is formed by atoms of A (cations), B (cations), and O (anions). Atoms of O form an hcp lattice. Atoms of A occupy 25% of tetrahedral holes and atoms of B occupy 50% of octahedral holes. What is the molecular formula of the solid?
1
2
3
4
08
PYQ 2025
medium
chemistry ID: ap-eapce
For which reaction ?
1
2
3
4
09
PYQ 2025
medium
chemistry ID: ap-eapce
How many moles of are produced when 4 moles of (ethane) combust completely?
Given reaction:
1
2 moles
2
4 moles
3
6 moles
4
8 moles
10
PYQ 2025
easy
chemistry ID: ap-eapce
How many atoms are present in 1 mole of oxygen gas (O2)?
1
2
3
4
11
PYQ 2025
medium
chemistry ID: ap-eapce
Consider the following reaction
A(g) + 3B(g) 2C(g); kJ.
At if of the reaction is -9 kJ, the standard entropy change (in JK ) of the same reaction at same temperature is
1
-5.33
2
-50.33
3
-500.33
4
-0.533
12
PYQ 2025
medium
chemistry ID: ap-eapce
The number of extensive and intensive properties in the list given below is respectively: % List - Density, enthalpy, mass, temperature, volume, pressure
1
4, 2
2
1, 5
3
2, 4
4
3, 3
13
PYQ 2025
easy
chemistry ID: ap-eapce
What is the number of moles in 88 grams of carbon dioxide (CO2)?
1
1 mole
2
2 moles
3
3 moles
4
4 moles
14
PYQ 2025
medium
chemistry ID: ap-eapce
1 mole of an ideal gas is allowed to expand isothermally and reversibly from 1L to 5L at 300 K. The change in enthalpy (in kJ) is
(R = 8.3 J K mol )
(R = 8.3 J K mol )
1
1.74
2
2.48
3
0.0
4
4.22
15
PYQ 2025
medium
chemistry ID: ap-eapce
Consider the following reaction
A(g) + 3B(g) 2C(g); kJ.
At if of the reaction is -9 kJ, the standard entropy change (in JK ) of the same reaction at same temperature is
1
-5.33
2
-50.33
3
-500.33
4
-0.533
16
PYQ 2025
medium
chemistry ID: ap-eapce
For which reaction ?
1
2
3
4
17
PYQ 2025
medium
chemistry ID: ap-eapce
At 273 K the maximum work done when pressure on 10 g of hydrogen is reduced from 10 atm to 1 atm under isothermal, reversible conditions is
1
-52.18 kJ
2
+26.09 kJ
3
-26.09 kJ
4
+52.18 kJ
18
PYQ 2025
medium
chemistry ID: ap-eapce
Consider the following
Statement-I: During isothermal expansion of an ideal gas its enthalpy decreases.
Statement-II: When 2.0 L of an ideal gas expands isothermally into vacuum, .
Statement-I: During isothermal expansion of an ideal gas its enthalpy decreases.
Statement-II: When 2.0 L of an ideal gas expands isothermally into vacuum, .
1
Both statement-I and statement-II are correct
2
Both statement-I and statement-II are not correct
3
Statement-I is correct, but statement-II is not correct
4
Statement-I is not correct, but statement-II is correct