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Here we are going to provide class 12 chemistry chapter 10 hydrogen solved mcqs that helps Sindh board students in their exam.

12 Class Chemistry Chapter 10 MCQs with Answers

This 2nd year’s chemistry chapter 10 Sindh board mcqs are also helpful for Karachi, Hyderabad, Larkana, and Sukkur board students in their examination preparation.

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12th Class Chemistry Chapter 9 MCQs

1. What is the other name of partial oxidation

a) Oxidation

b) Oxygen reduction

c) Oxygen reforming

d) None of the mentioned

Answer: c) Oxygen reforming

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2. Hydrogen can be produced from hydrocarbon by which method

a) Thermal decomposition

b) Partial oxidation

c) Steam reforming

d) All of the mentioned

Answer: d) All of the mentioned

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3. Which is the best method for petroleum hydrogenation

a) Thermal decomposition

b) Steam reforming

c) Partial oxidation

d) Catalytic reforming

Answer: b) Steam reforming

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4. Which type of reaction is catalytic reaction

a) Endothermic

b) Exothermic

c) Neutral

d) None of the mentioned

Answer: a) Endothermic

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5. During cracking of Natural gas, what is produced

a) Carbon

b) Hydrogen

c) Both C and H₂

d) None of the mentioned

Answer: c) Both C and H₂

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6. Chlorine has _______ isotopes.

a) 1

b) 2

c) 3

d) 4

Answer: b) 2

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7. __________ are defined as atoms of an element that have the same atomic number but different mass numbers.

a) Mole

b) Isotopes

c) Molecules

d) None of the above

Answer: b) Isotopes

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8. Hydrogen has ________ isotopes.

a) 4

b) 2

c) 3

d) 1

Answer: c) 3

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9. The U92238 is found in nature nearly _________.

a) 90% pure

b) Impure

c) 99% pure

d) Not present

Answer: c) 99% pure

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10. Isotopes of uranium are:

a) U92239, U92238

b) U92234, U92235, U92238

c) U92236, U92237

d) None of the above

Answer: b) U92234, U92235, U92238

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Conclusion

The topic of this post is class 12 chemistry chapter 10 MCQs with answers for board exam preparation additionally we add this post into the 12th class category.

Here you can prepare class 11 chemistry chapter 7 solution and electrolytes solved MCQs for Sindh board students that will be beneficial in exam paper preparation.

11 Class Chemistry Chapter 7 MCQs with Answer

These 1st-year chemistry chapter 7 MCQs are also helpful for Karachi, Hyderabad, Larkana, and Sukkur students in their Sindh Board Examination.

You May Also Like More 11th Class Chemistry MCQs:

Chapter 1 MCQs	Chapter 2	Chapter 3
Chapter 4	Chapter 5	Chapter 6

1. The difference of pKa values for HCl and Hl is two. It means:

a) HCl is 100 times stronger than Hl

b) HCl is 10 times stronger than Hl

c) Hl is 2 times stronger than HCl

d) Hl is 100 times stronger than HCl

Answer: d) Hl is 100 times stronger than HCl

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2. The electron being rich in electron and has negative charge is:

a) Anode

b) Cathode

c) Both

d) None of the above

Answer: b) Cathode

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3. Graphite is an inert electrode. When the electrolysis of aqueous solution of NaCl is carried out by using graphite electrode, then the substance collected at the cathode is:

a) Hydrogen gas

b) Sodium metal

c) Sodium hydroxide

d) Chlorine gas

Answer: a) Hydrogen gas

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4. ________ is that potential which is developed when the electrode of an element is in contact with the solution of its own ions.

a) Gravitational potential

b) Hydro potential  

c) Electrode potential

d) None of the above

Answer: c) Electrode potential

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5. Stronger the oxidizing agent, greater is the:

a) Oxidation potential

b) Reduction potential

c) Redox potential

d) E.M.F of cell

Answer: b) Reduction potential

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6. The reduction potential of Zn is:

a) #ERROR!

b) -0.34V

c) #ERROR!

d) -0.6

Answer: b) -0.34V

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7. ____________ is the species that reduces a substance by donating electrons to it.

a) Reducing agent

b) Oxidizing agent

c) Both of the above

d) None of the above

Answer: a) Reducing agent

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8. __________ is the species that oxidizes substance by taking electrons from it.

a) Reducing agent

b) Oxidizing agent

c) Both of the above

d) None of the above

Answer: b) Oxidizing agent

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9. Oxidizing agent itself gets reduced while the reducing agent gets oxidized.

a) TRUE

b) FALSE

Answer: a) TRUE

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10. Non-metals are _____.

a) Reducing agent

b) Oxidizing agent

c) Both of the above

d) None of the above

Answer: b) Oxidizing agent

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11. Metals are good reducing agents because they have a tendency to ___________.

a) Accept electrons

b) Lose electrons

c) Both of the above

d) None of the above

Answer: b) Lose electrons

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12. pH scale ranges from ___________.

a) 0 to 10

b) 10 to 14

c) 1 to 14

d) 0 to 14

Answer: d) 0 to 14

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13. If a liquid has a pH of 7 then it must.

a) be a colorless and odorless liquid

b) freeze at 0o and boils at 100oC

c) be neutral

d) be a solution containing water

Answer: c) be neutral

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14. Concentration of ____________ in pure water is the basis for Ph scale.

a) Oxygen ions

b) Nitrogen ion

c) Hydrogen ion

d) none of the above

Answer: c) Hydrogen ion

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15. The solutions having pH above 7 are:

a) Acidic

b) Neutral

c) Basic

d) None of the above

Answer: c) Basic

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16. Common indicator for pH

a) Methyl orange

b) Litmus

c) Phenolphthalein

d) All of the above

Answer: b) Litmus

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17. A buffer solution of NH4OH and NH4Cl is diluted with water to a small extent. The pH of buffer solution.

a) Increases

b) Decreases

c) Remains same

d) None of the above

Answer: c) Remains same

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18. The number of moles of acid or base required by one dm3 of buffer to alter its pH by one unit is called:

a) Buffer efficiency

b) Buffer capacity

c) Buffer action

d) None

Answer: b) Buffer capacity

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19. A solution which resists the change of pH when a small quantity of an acid or a base is added to that is called:

a) Buffer capacity

b) Buffer solution

c) Basic buffer

d) None of the above

Answer: b) Buffer solution

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Conclusion

The topic of this post is class 11 Chemistry chapter 7 solved mcqs with answers additionally we add this post to the 11th class mcqs category.

If you are a student of class 11 and studying on the Sindh board, then this post will help you to prepare the class 11 chemistry chapter 8 introduction to chemical kinetics MCQs with solved answers for Sindh board students that will be beneficial in exam paper preparation.

11 Class Chemistry Chapter 8 MCQs with Answer

These 1st-year chemistry chapter 8 MCQs are also helpful for Karachi, Hyderabad, Larkana, and Sukkur students in their Sindh Board Examination.

1. Rate of reaction is defined as the:

a) rate of disappearance of catalyst from the reaction vessel

b) rate of change of concentration of either reactant or product per unit time

c) rate of change of concentration of reactants only

d) rate of change of concentration of products only

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2. Unit of rate constant is the same as that of the rate of reaction in:

a) Zero order reaction

b) 1^st order reaction

c) 2^nd order reaction

d) 3^rd order reaction

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3. The rate of reaction determined at any time is called:

a) Average rate

b) Instantaneous rate

c) Spontaneous rate

d) Overall rate

---

4. When a reaction proceeds in a sequence of steps, the over all rate is determined by:

a) slowest step

b) fastest step

c) order of different steps

d) molecularity of all steps

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5. The order of decomposition of nitrogen peroxide

2N205 ‘n 2N204 + 2 is

a) First order

b) Second order

c) Third order

d) Zero order

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Conclusion

The topic of this post is class 11 chemistry chapter 8 mcqs with solved answers for exam and test preparation additionally we add this post to the 11th class mcqs category.

Here we are going to provide class 11 chemistry chapter 5 energetics of chemical bonding solved MCQs for Sindh board students that will be beneficial in exam paper preparation.

11 Class Chemistry Chapter 5 MCQs with Answer

This Sindh board 1st-year chemistry chapter 5 MCQs are also helpful for Karachi, Hyderabad, Larkana, and Sukkur students in their Examinations.

1. The net change in a chemical reaction is same whether it takes place directly or indirectly is

a) Henry’s Law

b) Charles’s Law

c) Hess’s Law

d) Graham’s Law

Answer: c) Hess’s Law

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2. One of the best applications of Hess’s Law is to calculate the lattice energy of ionic compound is

a) Measurement of enthalpy change in a calorimeter

b) Studying of first law of thermodynamics

c) Born-Haber cycle

d) Measurement of a heat of formation of a compound

Answer: c) Born-Haber cycle

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3. The optimum temperature for the synthesis of NH3 Haber’s process is

a) 200oC

b) 300oC

c) 400oC

d) 500oC

Answer: c) 400oC

---

4. One of the statements about the Born-Haber cycle is correct. Which is that statement

a) Born-Haber cycle is different from Hess’s Law

b) The energy change in a cyclic process is not zero

c) The lattice energy of the crystalline substances can be calculated easily

d) None of the above

Answer: c) The lattice energy of the crystalline substances can be calculated easily

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5. Diamond and graphite are two allotropic forms of carbon. Their heats of combustion are -395 KJ. mol-1 and -393.5 Kj.mol-1, respectively. Heat change in the conversion of graphite to diamond is

a) -1.9 Kj.mol-1

b) #ERROR!

c) #ERROR!

d) -788.9 Kj.mol-1

Answer: b) #ERROR!

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Conclusion

The topic of this post is class 11 Chemistry chapter 5 energetics of chemical bonding mcqs with answers additionally we add this post to the 11th class mcqs category.

Here we can prepare the class 11 chemistry chapter 6 chemical equilibrium solved MCQs for Sindh board students that will be beneficial in exam preparation.

11 Class Chemistry Chapter 6 MCQs with Answer

These 1st-year chemistry chapter 5 MCQs help Karachi, Hyderabad, Larkana, and Sukkur students in their Sindh Board Examination.

1. When the ______of ionic concentrations exceeds the solubility product, then the precipitation occurs.

a) Sum

b) Product

c) Both of the above

d) ¼ product

Answer: b) Product

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2. The solubility product of AgCl is 2.0×10-10 mol2.dm-6. The maximum concentration of Ag+ ions is the solution is

a) 2.0×10-10 mol2.dm-6

b) 1.41×10-5 mol.dm-3

c) 4.0×10-10 mol2.dm-3

d) 1.0×10-10 mol2.dm-6

Answer: b) 1.41×10-5 mol.dm-3

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3. When the ionic product of sparingly soluble substance is _____ to the Ksp of the substance. Then the solution is said to be saturate.

a) Greater

b) Lesser

c) Equal

d) None of the above

Answer: c) Equal

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More 11 Class Chemistry MCQs

Chapter 1 MCQs	Chapter 2
Chapter 3	Chapter 4

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4. What is the pH of a saturated solution of MgOh2

a) 3.5

b) 10.1

c) 10.9

d) 10.5

Answer: d) 10.5

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5. Which of the following H+ ion concentration is possible for basic solution

a) 10-12 M

b) 10-2 M

c) 10-14 M

d) 10-20 M

Answer: a) 10-12 M

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6. When HCl is added to H2S aqueous solution, its ionization

a) Increases

b) Remains constant

c) First increases then decreases

d) Decreases

Answer: d) Decreases

---

7. In the presence of common ion, the ionization of an electrolyte will

a) Increase

b) Decrease

c) No affect

d) Moderate change

Answer: b) Decrease

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8. The suppression of ionization of a weak acid or weak base by adding one of its own ions is known as

a) Ionization

b) Buffer action

c) Common ion effect

d) Buffer capacity

Answer: c) Common ion effect

---

9. By adding NH4Cl to NH4OH. The ionization of NH4OH

a) Increases

b) Remain same

c) Decreases

d) Increase 100 times

Answer: c) Decreases

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Conclusion

The topic of this post is class 11 chemistry chapter 6 mcqs with solved answers for Sindh board exam paper preparation additionally we add this post into the 11th class mcqs category.

Here we are going to provide class 11 Chemistry chapter 3 the atomic structure solved MCQs for Sindh board students that help in their exam.

11 Class Chemistry Chapter 3 Solved MCQs

It can help 1st-year chemistry chapter 3 MCQs for Karachi, Hyderabad, Larkana, and Sukkur Board students in their Sindh Examination.

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• Chapter 1 Chemistry MCQs Class 11
• Chapter 2 Solved MCQs

1. Properties of waves are

a) Wavelength

b) Wave number

c) Frequency

d) All

Answer: d) All

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2. Which one of the following is not the unit of the wave number

a) m-1

b) cm-1

c) mm-2

d) cm

Answer: d) cm

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3. The velocity of photon of light is:

a) Equal to square of its amplitude

b) Depends on its source

c) Depends on its way of travelling

d) Independent of its source

Answer: d) Independent of its source

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4. The value of Planck’s constant is:

a) 6.62×10-34 J.S

b) 6.62X10-27 J.S

c) 6.62X10-14 J.S

d) 6.62X10-32 J.S

Answer: a) 6.62×10-34 J.S

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5. The relation between energy of a photon of light and its frequency was given by:

a) Broglie in his nature of matter

b) Bohr in his model

c) Rutherford in his a-rays scattering experiment

d) Planck in his quantum theory

Answer: d) Planck in his quantum theory

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6. On which laws Rutherford’s atomic model was based on:

a) Laws of mass action

b) Laws of motion and gravitation

c) Law of conservation of energy

d) None of the above

Answer: b) Laws of motion and gravitation

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7. According to Rutherford’s Model, the revolving electron should not emit the energy continuously.

a) True

b) False

Answer: b) False

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8. Rutherford concluded that atoms contain heavy and positively charged parts of the center. And called this center a nucleus.

a) True

b) False

Answer: a) True

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9. The wavelength of x-ray emitted from the surface of the metal depends upon:

a) Atomic number of metals

b) Wavelength of x-ray

c) Both of the above

d) None of the above

Answer: a) Atomic number of metals

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10. Moseley’s law is the relationship between the __________ of line spectrum of x-ray.

a) Atomic number

b) Frequency

c) Wavelength

d) All of the above

Answer: b) Frequency

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11. The atomic number is the number of _________ in the nucleus of an atom.

a) Neutrons

b) Electrons

c) Protons

d) All of the above

Answer: c) Protons

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12. The energy levels of H-atom in Bohr model are called:

a) Ground state energy levels

b) Orbits

c) Orbitals

d) Degenerate orbitals

Answer: b) Orbits

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13. The value of Bohr radius for 1^st orbit of H-atom is:

a) 0.529 x 10-6 cm

b) 0.529 x 10-8 cm

c) 0.529 x 10-19 cm

d) 0.529 x 10-12 cm

Answer: b) 0.529 x 10-8 cm

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14. Bohr model of atom explains:

a) Photoelectric effect

b) Stark effect

c) Zeeman effect

d) None

Answer: a) Photoelectric effect

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15. According, to the Bohr’s model, the radius of second orbit is:

a) 2 A0

b) 2.1 A0

c) 2.11 x 10-14 m

d) 2.11 x 10-19 m

Answer: b) 2.1 A0

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16. When the electron is brought from infinity to the ground state of the hydrogen atom, the energy is:

a) emitted

b) Absorbed

c) Not effected

d) Is influenced by the surrounding

Answer: a) emitted

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Conclusion

The topic of this post is class 11 chemistry chapter 3 mcqs with answers for exams paper preparation additionally we add this post into the 11th class category.