Chemistry Exam: Quiz Questions!
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Four elements A, B, C, and D: the element (A) used as a catalyst in the preparation of Ammonia gas in industry, one of the compounds of the element (B) used as an oxidizing agent in the dry cell, the element (C) used in the manufacture of heating coils and element (D) is the first discovered metal. Based on the previous information, the correct arrange of these four elements will be:
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Fe-Ni-Cu-Mn
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Mn-V-Fe-Zn
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V-Zn-Mn-Fe
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Fe-Mn-Ni-Cu
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Are you ready for your chemistry exam? Chemistry is the research of the matter, energy, and the relationship between them. Chemists become encouraged when they figure out how a chemical transformation occurs. It plays a crucial role in science, and it plays an essential role in daily life activities. Chemistry is also involved in the production of food and healthcare See moreproducts. This quiz will get you excited about chemistry.
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- 2.
The element or the compound or the alloy used in obtaining pure drinkable water in deserts.
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Copper
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Copper (II) sulphate
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Potassium permenganate
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Cobalt 60
Correct Answer
A. Copper (II) sulphateExplanation
Copper (II) sulphate can be used to obtain pure drinkable water in deserts. Copper (II) sulphate is a compound that has antimicrobial properties, which means it can kill or inhibit the growth of microorganisms such as bacteria and algae. When added to water, it can help in disinfecting and purifying it, making it safe for drinking. This compound is commonly used in water treatment processes to remove impurities and ensure the water is safe for consumption.Rate this question:
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- 3.
What is the suitable alloy for the manufacture of Juice containers?
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Iron-Aluminum
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Aluminum-Copper
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Manganese-Aluminum
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Iron-Manganese
Correct Answer
A. Manganese-AluminumExplanation
Manganese-Aluminum is the suitable alloy for the manufacture of juice containers because it provides good corrosion resistance and is lightweight. Manganese improves the strength and hardness of aluminum, making it more durable and suitable for holding liquids. Additionally, the combination of manganese and aluminum ensures that the alloy is resistant to acidic substances often found in juices, preventing any unwanted reactions or contamination.Rate this question:
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- 4.
Nickel-Chromium alloy is used in heating coils and electric furnaces because:
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It resists corrosion even it is hot
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It has high resistance to electric current
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It produces high amount of heat
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It consume a small amount of energy to produce heat
Correct Answer
A. It resists corrosion even it is hotExplanation
Nickel-Chromium alloy is used in heating coils and electric furnaces because it resists corrosion even when it is exposed to high temperatures. This is important in these applications as the coils and furnaces are subjected to extreme heat, which can cause other materials to corrode and degrade. By using a Nickel-Chromium alloy, the coils and furnaces can maintain their integrity and performance over time, making them more durable and reliable.Rate this question:
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- 5.
Which of the following compounds are used in the painting?
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ZnO / K2Cr2O7 / MnO2
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Cr2O3 / V2O5 / ZnO
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CuSO4 / ZnO / Cr2O3
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Option 4
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K2Cr2O7 / KMnO4 / ZnO
Correct Answer
A. Cr2O3 / V2O5 / ZnOExplanation
The correct answer is Cr2O3 / V2O5 / ZnO. This is because Cr2O3 (chromium(III) oxide) and V2O5 (vanadium(V) oxide) are commonly used as pigments in paints, providing various colors such as green and yellow. ZnO (zinc oxide) is also used as a white pigment in paints. Therefore, these compounds are commonly used in the painting process.Rate this question:
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- 6.
Which of the following is used in the manufacture of cosmetics?
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Zinc oxide , Titanium dioxide
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Manganese dioxide , Titanium dioxide
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Vanadium pentoxide , Manganese sulphate
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Chromium trioxide , Zinc oxide
Correct Answer
A. Zinc oxide , Titanium dioxideExplanation
Zinc oxide and titanium dioxide are commonly used in the manufacture of cosmetics. Zinc oxide is used as a sunscreen agent and provides protection against both UVA and UVB rays. Titanium dioxide is also used as a sunscreen agent and helps to block harmful UV rays. Both of these ingredients are safe for use in cosmetics and are often found in sunscreens, foundations, and other skincare products.Rate this question:
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- 7.
Which of the following are used as an oxidizing agent?
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KMnO4 / Cr2O3 / V2O5
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MnO2 / MnSO4 / K2Cr2O7
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CuSO4 / V2O5 / MnSO4
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K2Cr2O7 / MnO2 / KMnO4
Correct Answer
A. K2Cr2O7 / MnO2 / KMnO4Explanation
K2Cr2O7, MnO2, and KMnO4 are all commonly used as oxidizing agents. They have the ability to accept electrons from other substances, causing them to be oxidized. K2Cr2O7, also known as potassium dichromate, is a strong oxidizing agent that is commonly used in laboratory settings. MnO2, or manganese dioxide, is another powerful oxidizing agent that is often used in chemical reactions. KMnO4, or potassium permanganate, is a purple-colored compound that is widely used as an oxidizing agent in various applications, including water treatment and organic synthesis.Rate this question:
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- 8.
Which of the following is used as a fungicide?
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ZnS , MnSO4
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CuSO4 , MnSO4
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ZnS, CuSO4
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CuSO4
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None
Correct Answer
A. CuSO4 , MnSO4Explanation
Both CuSO4 (copper sulfate) and MnSO4 (manganese sulfate) are commonly used as fungicides. They are effective in controlling fungal diseases on plants by inhibiting the growth and reproduction of fungi. CuSO4 acts by disrupting the cell membrane of the fungi, while MnSO4 helps in activating enzymes that can suppress fungal growth. Therefore, the correct answer is CuSO4, MnSO4.Rate this question:
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- 9.
Scandium is used in the manufacture of Git fighter due to:
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It has low density and high hardness
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It keeps its strength at elevated temperatures
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It gives steel hardness and corrosion resistance
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It resists the effect of atmosphere
Correct Answer
A. It has low density and high hardnessExplanation
Scandium is used in the manufacture of Git fighters because it has low density and high hardness. These properties make it ideal for creating lightweight yet strong materials, which are crucial in aerospace applications. The low density allows the fighter to be more fuel-efficient, while the high hardness ensures durability and resistance to wear and tear.Rate this question:
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- 10.
Cobalt-60 is used in quality control and treating cancer.
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As it s a radioactive element
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As it emits alpha rays
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As it emits gamma radiation
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As it produces ultrasonic waves
Correct Answer
A. As it emits gamma radiationExplanation
Cobalt-60 is used in quality control and treating cancer because it emits gamma radiation. Gamma radiation is a high-energy form of electromagnetic radiation that can penetrate through materials and kill cancer cells. It is also used in quality control processes because it can be easily detected and measured, allowing for accurate testing and analysis.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Oct 04, 2020Quiz Created by
Usama Said
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