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Chemistry Quiz Details
| Quiz Name | Chemistry |
| Category | GK Quiz |
| Number of Questions | 25 |
| Time | 30 Minutes |
| Exam Type | MCQ (Multiple Choice Questions) |
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Let’s start the Chemistry Quiz now.
Chemistry Questions and Answers
1. Which of the following is the lightest noble gas?
A) Helium
B) Neon
C) Argon
D) Krypton
Answer: A) Helium
Explanation: Helium is the lightest noble gas with an atomic number of 2.
2. Which of the following is not a greenhouse gas?
A) Carbon dioxide
B) Methane
C) Oxygen
D) Water vapor
Answer: C) Oxygen
Explanation: Oxygen is not a greenhouse gas as it does not absorb and emit radiation in the infrared range.
3. Which of the following is not a type of chemical bond?
A) Covalent bond
B) Ionic bond
C) Metallic bond
D) Mechanical bond
Answer: D) Mechanical bond
Explanation: Mechanical bond is not a type of chemical bond, but rather a bond resulting from the interlocking shapes of molecules.
4. What is the chemical formula for table salt?
A) NaCl
B) HCl
C) NaOH
D) H2SO4
Answer: A) NaCl
Explanation: The chemical formula for table salt is NaCl, which stands for sodium chloride.
5. What is the pH of pure water at room temperature?
A) 7
B) 10
C) 14
D) 0
Answer: A) 7
Explanation: Pure water at room temperature has a neutral pH of 7.
6. Which of the following elements is a metalloid?
A) Aluminum
B) Silicon
C) Iron
D) Sodium
Answer: B) Silicon
Explanation: Silicon is a metalloid, which means it has properties of both metals and non-metals.
7. Which of the following is the main component of natural gas?
A) Methane
B) Ethane
C) Propane
D) Butane
Answer: A) Methane
Explanation: Methane is the main component of natural gas, accounting for over 90% of its composition.
8. What is the chemical symbol for gold?
A) Ag
B) Au
C) Cu
D) Fe
Answer: B) Au
Explanation: The chemical symbol for gold is Au, which comes from the Latin word for gold, aurum.
9. What is the process by which a solid changes directly to a gas?
A) Melting
B) Boiling
C) Sublimation
D) Condensation
Answer: C) Sublimation
Explanation: Sublimation is the process by which a solid changes directly to a gas, bypassing the liquid state.
10. Which of the following is a non-metal?
A) Sodium
B) Iron
C) Oxygen
D) Copper
Answer: C) Oxygen
Explanation: Oxygen is a non-metal, which means it lacks metallic properties such as luster and ductility.
11. Which of the following is a strong acid?
A) Acetic acid
B) Hydrochloric acid
C) Citric acid
D) Carbonic acid
Answer: B) Hydrochloric acid
Explanation: Hydrochloric acid is a strong acid, which means it completely dissociates in water to form H+ ions.
12. What is the SI unit of pressure?
A) Pascal
B) Newton
C) Joule
D) Watt
Answer: A) Pascal
Explanation: The SI unit of pressure is the pascal, which is defined as one newton per square meter.
13. What is the process by which plants convert sunlight into chemical energy?
A) Photosynthesis
B) Respiration
C) Fermentation
D) Combustion
Answer: A) Photosynthesis
Explanation: Photosynthesis is the
14. Which of the following compounds is an example of a Lewis acid?
A) H2O
B) NaCl
C) AlCl3
D) NH3
Answer: C) AlCl3
Explanation: A Lewis acid is a compound that can accept a pair of electrons to form a covalent bond. AlCl3 is an example of a Lewis acid because it has an empty orbital that can accept an electron pair from a Lewis base.
15. Which of the following is NOT a colligative property?
A) Vapor pressure lowering
B) Freezing point depression
C) Boiling point elevation
D) Density
Answer: D) Density
Explanation: Colligative properties are properties of a solution that depend only on the number of solute particles in the solution, not on the identity of the solute. Vapor pressure lowering, freezing point depression, and boiling point elevation are all examples of colligative properties, while density is not.
16. What is the pH of a solution with a hydrogen ion concentration of 10^-5 M?
A) 5
B) 7
C) 9
D) 11
Answer: A) 5
Explanation: pH is defined as the negative logarithm (base 10) of the hydrogen ion concentration. Therefore, pH = -log[H+]. In this case, pH = -log(10^-5) = 5.
17. Which of the following is an example of a redox reaction?
A) 2Na + Cl2 → 2NaCl
B) HCl + NaOH → NaCl + H2O
C) Fe + CuSO4 → FeSO4 + Cu
D) CH4 + 2O2 → CO2 + 2H2O
Answer: C) Fe + CuSO4 → FeSO4 + Cu
Explanation: A redox reaction is a chemical reaction in which one or more atoms undergo oxidation while one or more atoms undergo reduction. In a redox reaction, the species that loses electrons is said to be oxidized, while the species that gains electrons is said to be reduced.
18. Which of the following is a property of nonmetals?
A) Good conductors of electricity
B) Malleable and ductile
C) Tend to form cations
D) Brittle and non-ductile
Answer: D) Brittle and non-ductile
Explanation: Nonmetals are a group of elements on the periodic table that are generally poor conductors of heat and electricity, are not malleable or ductile, and tend to form anions. They are also typically brittle in solid form.
19. Which of the following is a pure substance?
A) Mixture
B) Compound
C) Solution
D) Element
Answer: D) Element
Explanation: A pure substance is a type of matter that has a fixed chemical composition and physical properties. Elements are the simplest form of pure substances as they cannot be broken down into simpler substances by chemical means.
20. What is the pH of a neutral solution?
A) 0
B) 7
C) 14
D) -7
Answer: B) 7
Explanation: The pH scale measures the acidity or basicity of a solution. A neutral solution has a pH of 7, which means it is neither acidic nor basic.
21. Which of the following is an example of an exothermic reaction?
A) Ice melting
B) Photosynthesis
C) Burning of wood
D) Mixing of acids
Answer: C) Burning of wood
Explanation: An exothermic reaction is a chemical reaction that releases energy in the form of heat, light, or sound. The burning of wood is an example of an exothermic reaction as it releases heat and light.
22. What is the difference between a physical change and a chemical change?
A) Physical changes involve a change in chemical composition, while chemical changes do not.
B) Chemical changes involve a change in chemical composition, while physical changes do not.
C) Physical changes always produce a new substance, while chemical changes do not.
D) Chemical changes always produce a new substance, while physical changes do not.
Answer: B) Chemical changes involve a change in chemical composition, while physical changes do not.
Explanation: Physical changes involve a change in the physical properties of a substance, such as its shape, size, or state of matter, but not it’s chemical composition. Examples of physical changes include melting ice, boiling water, and breaking glass. Chemical changes, on the other hand, involve a change in the chemical composition of a substance, resulting in the formation of a new substance with different properties. Examples of chemical changes include burning wood, rusting iron, and baking a cake.
23. What is the chemical formula for water?
A) H2SO4
B) CO2
C) HCl
D) H2O
Answer: D) H2O
Explanation: Water is a compound made up of two hydrogen atoms and one oxygen atom, so its chemical formula is H2O.
After completion of your Chemistry Quiz, correspondingly you can check Chemistry GK Questions and Answers and rectify your mistakes. Chemistry General Knowledge Questions helps the candidate to crack various competitive exams like EAMCET, JEE-MAINS, NEET and other entrance exams for Engineering and Medical Colleges. Thereby, we provide Chemistry General Knowledge Questions which helps candidates to crack the competitive exams in a natural manner through which they can rate themselves individually. Well, after taking the Chemistry Online Test, you can also check whether you can be attempted the exact answers or not. Moreover, we have clearly given the explanation for the individual question. Without late, take the quiz.
About Chemistry GK Questions
- Chemistry is the science that deals with the materials of the universe, and the changes that undergo.
- Materials of the universe exist in various forms:
- Gas: air, oxygen.
- Liquid: water, gasoline, vinegar, orange juice.
- Solid: rocks, charcoal, table salt, sugar, wood.
Some Examples of Changes
Simply check some of the examples from this section. Many of the candidates are waiting to check some of the basic examples in various sources. And to help them here in this section, our team has provided the formulas as well as examples. So, take a look at the below.
The burning of charcoal:
charcoal+oxygen → carbon dioxide
The Burning of gasoline:
gasoline+oxygen → carbon dioxide+water vapor
Benefits of Practicing Chemistry Quiz:
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- The timer will be displayed in the top right corner which helps you to know the time and the time which is remained to answer.
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Chemistry Quiz Results
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