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Which of the following compounds is prepared using Contact Process?
The correct answer is [A] Sulphuric acid is prepared using the Contact Process. The Contact Process is an industrial method used to produce sulfuric acid on a large scale. It involves the oxidation of sulfur dioxide (SO2) to sulfur trioxide (SO3) using a catalyst, typically vanadium(V) oxide, and thRead more
The correct answer is [A] Sulphuric acid is prepared using the Contact Process.
[B] Nitric acid is prepared by the Ostwald process, which is a different industrial method.
[C] Hydrochloric acid is prepared by the direct synthesis of hydrogen and chlorine
[D] Benzene is an organic compound, it is not prepared by the contact process
See lessWhat do we call the atomic species of the same element differing in mass?
The correct answer is [B] Isotopes The atomic species of the same element differing in mass are called Isotopes. Isotopes are atoms of the same element that have the same number of protons in their nucleus, but a different number of neutrons. Because the number of protons in the nucleus determines tRead more
The correct answer is [B] Isotopes
The atomic species of the same element differing in mass are called Isotopes.
Isotopes are atoms of the same element that have the same number of protons in their nucleus, but a different number of neutrons.
Because the number of protons in the nucleus determines the atomic number and the chemical properties of the element, isotopes of the same element have the same chemical properties, but may have different physical properties, such as melting and boiling points, and different nuclear properties, such as radioactivity.
[A] Isobars are species that have the same atomic mass but different atomic numbers.
[C] Isomers are species that have the same atomic number but different arrangements of atoms in the molecule
[D] Such species do exist and they are called Isotopes.
See lessWhich of the following is an example of insulator?
The correct answer is [A] Diamond [A] Diamond is an example of insulator. Diamond is an extremely hard and durable material that is often used in industrial cutting and grinding applications. It is an excellent thermal conductor but an electrical insulator. [B] Mercury is a liquid metal and a good cRead more
The correct answer is [A] Diamond
[A] Diamond is an example of insulator. Diamond is an extremely hard and durable material that is often used in industrial cutting and grinding applications.
It is an excellent thermal conductor but an electrical insulator.
[B] Mercury is a liquid metal and a good conductor of electricity, so it is not an insulator.
[C] Iron is a metal and is a good conductor of electricity, so it is not an insulator.
[D] Chromium is a metal and is a good conductor of electricity, so it is not an insulator.
See lessWhat causes the twinkling of stars?
The correct answer is [A] Atmospheric refraction of starlight. [A] Atmospheric refraction of starlight is the main cause of the twinkling of stars. When light from a star enters the Earth's atmosphere, it is bent or refracted by different layers of air at different temperatures and densities. This cRead more
The correct answer is [A] Atmospheric refraction of starlight.
[A] Atmospheric refraction of starlight is the main cause of the twinkling of stars. When light from a star enters the Earth’s atmosphere, it is bent or refracted by different layers of air at different temperatures and densities.
This causes the light to take different paths to our eyes, making it appear as if the star is twinkling or dancing.
[B] Dispersion of starlight is not a cause of the twinkling of stars. Dispersion is the phenomenon by which light is separated into its component colors, such as when light passes through a prism and creates a rainbow.
[C] Scattering of starlight is also not a cause of the twinkling of stars. Scattering is the phenomenon by which light is redirected in many different directions by small particles in the atmosphere, such as dust or water droplets. This causes the sky to appear blue during the day and causes the phenomenon of the blue light scattering around the sun during sunset and sunrise
[D] None of the above is not a correct answer, as the twinkling of stars is caused by the atmospheric refraction of starlight.
See lessWhich of the following is a stem vegetable?
The correct answer [C] Asparagus is a stem vegetable. The edible part of asparagus is the stem, which is typically green. The stem is typically thin and has a slightly woody texture and a unique, earthy, and nutty flavor. It is a good source of vitamin K and antioxidants also low in calories and choRead more
The correct answer [C] Asparagus is a stem vegetable.
Additional Information
- Lettuce is a leafy vegetable, not a stem vegetable. The edible part of lettuce is the leaves, which are typically green or red. Lettuce is low in calories and high in Vitamin K. Lettuce is often used in salads, sandwiches and as a garnish.
- Carrot is a root vegetable. The edible part of a carrot is the taproot, which is the underground stem of the plant. Carrots are an excellent source of Vitamin A, carotenoids and antioxidants. They can be eaten raw or cooked, they can be grated, sliced, diced or juiced and they are often used in salads, soups and stews.
- Asparagus is a stem vegetable. The edible part of asparagus is the stem, which is typically green. The stem is typically thin and has a slightly woody texture and a unique, earthy and nutty flavor. It is a good source of vitamin K and antioxidant also low in calories and cholesterol-free. Asparagus can be eaten raw, steamed, grilled, or roasted and is often used in salads, pasta dishes, and stir-fries.
- Onion is a bulb vegetable, not a stem vegetable. The edible part of the onion is the bulb, which is typically white, yellow, or purple. The stem of the onion plant is typically thin and green and is not typically eaten. Onions are a good source of Vitamin C and dietary fiber, they can be eaten raw or cooked, and they are often used to add flavor to a variety of dishes, including soups, stews, and sauces.
See lessWhich among the following virus is also called as “Hit & Hide” Virus?
The correct answer is [A] RSV Virus (respiratory syncytial virus ) "Hit & Hide" virus. Each of the viruses you listed are associated with different symptoms and are caused by different types of viruses. RSV is a respiratory virus, Dengue is a tropical disease caused by a mosquito-borne virus, InRead more
The correct answer is [A] RSV Virus (respiratory syncytial virus )
Additional Information
- RSV Virus (respiratory syncytial virus) is a common respiratory virus that primarily affects infants and young children. It is responsible for causing respiratory illness, including bronchiolitis and pneumonia.
- Dengue virus is a tropical disease caused by a mosquito-borne virus. It is common in Southeast Asia, Africa, and South America, and can cause fever, headache, and muscle and joint pain. In some cases, it can lead to severe dengue, also known as dengue hemorrhagic fever, which can be fatal.
- Influenza virus (the flu) is a common respiratory illness caused by the flu virus. It can cause symptoms such as fever, cough, sore throat, and body aches.
- HIV virus (human immunodeficiency virus) is a virus that attacks the immune system. It is the virus that causes AIDS (Acquired Immunodeficiency Syndrome). If left untreated, HIV can lead to the development of AIDS, which can be fatal.
See lessIn genetics, the Reverse transcriptase helps in which among the following transcriptions?
The correct answer is [B] Single-stranded RNA into double-stranded DNA. Reverse transcriptase is an enzyme that catalyzes the reverse transcription of single-stranded RNA into double-stranded DNA. Reverse transcription is a process by which an RNA molecule is used as a template to synthesize a complRead more
The correct answer is [B] Single-stranded RNA into double-stranded DNA.
Additional Information
A) Single-stranded DNA into double-stranded DNA is not the function of reverse transcriptase.
C) Single Stranded RNA into double-stranded RNA is not the function of reverse transcriptase.
D) Double Stranded DNA into single stranded RNA is not the function of reverse transcriptase.
See lessWhich among the following Vitamins helps in clotting of Blood?
The correct answer is [D] Vitamin K. Vitamin K is a fat-soluble vitamin that plays an important role in blood clotting, also known as coagulation. The vitamin K-dependent proteins are essential for the formation of clots and are activated by vitamin K. It helps in the production of clotting factors,Read more
The correct answer is [D] Vitamin K.
Additional Information
- Vitamin C is an antioxidant vitamin that helps in the production of collagen, a protein that helps in the formation of tendons, ligaments, and blood vessels, but it is not related to clotting of blood.
- Vitamin D is a fat-soluble vitamin that helps in the regulation of calcium and phosphorus levels in the body, but it is not related to the clotting of blood.
- Vitamin E is a fat-soluble vitamin that acts as an antioxidant and helps in the protection of cells from damage, but it is not related to the clotting of blood.
See lessIn nuclear reactors, graphite is used as a/an:
The correct answer is [C] moderator. Graphite is a form of carbon that is commonly used as a moderator in nuclear reactors. A moderator is a substance that is used to slow down the neutrons produced by the fission of atoms in the reactor core. These slowed-down neutrons are more likely to be captureRead more
The correct answer is [C] moderator.
Additional Information
- Fuel refers to the material that is used to generate the energy in the reactor, which is typically uranium or plutonium.
- Lubricant refers to a substance used to reduce friction between two surfaces in contact, but it is not used in nuclear reactors.
- Moderator refers to a substance that is used to slow down the neutrons in a nuclear reactor to increase the probability of nuclear fission, Graphite is commonly used as a moderator in nuclear reactors
- An insulator refers to a substance that is used to prevent the transfer of heat, electric charge, or sound, but it is not used in nuclear reactors.
See lessSulphuric acid is ….. basic
The correct answer is [B] dibasic. Sulfuric acid (H2SO4) is a strong acid that is commonly used in many industrial and laboratory processes. It is a diprotic acid, meaning that it can lose two protons (H+) per molecule, and so it is dibasic acid. Sulfuric acid can act as an oxidizing agent and it isRead more
The correct answer is [B] dibasic.
Additional Information
In summary, Sulfuric acid is a strong acid that is commonly used in many industrial and laboratory processes. It is a diprotic acid, meaning that it can lose two protons (H+) per molecule and it is a dibasic acid, not a monobasic, tribasic or tetrabasic acid.
See lessRusting of iron is an example of:
The correct answer is [B] corrosion. Corrosion is the gradual destruction of materials, typically metals, by chemical reactions with their surroundings. Rusting of iron is a specific example of corrosion caused by the chemical reaction of iron with water and oxygen, which forms hydrated iron(III) oxRead more
The correct answer is [B] corrosion.
Additional Information
In summary, Rusting of iron is an example of corrosion, which is the gradual destruction of materials, typically metals, by chemical reactions with their surroundings.
See lessA substance acquired in the form of brownish film on a piece of iron left in the open for some time is:
The correct answer is [A] Rust. Rust is a reddish-brown, flaky coating that forms on the surface of iron and steel when they are exposed to oxygen and moisture. Rust is an oxidation process that occurs when iron is exposed to air and water, and it can occur on any iron or steel object left in the opRead more
The correct answer is [A] Rust.
Additional Information
In summary, the brownish film on a piece of iron left in the open for some time is rust, which is an oxidation process that occurs when the iron is exposed to air and water.
See lessThe metals commonly used for electroplating are:
The correct answer is [B] Chromium, Copper, and Nickel. Electroplating is a process in which a thin layer of metal is deposited on a conductive surface by passing an electric current through a solution containing the metal ions. The commonly used metals for electroplating are Chromium, Copper, and NRead more
The correct answer is [B] Chromium, Copper, and Nickel.
Additional Information
In summary, Chromium, Copper, and Nickel are commonly used for electroplating as they are conductive and provide good corrosion resistance.
See lessWhich element is most electronegative among Arsenic, Nitrogen and Phosphorus?
The correct answer is [A] Nitrogen The most electronegative element among Arsenic, Nitrogen, and Phosphorus is Nitrogen. In chemistry, electronegativity is a measure of an atom's ability to attract electrons to itself. Fluorine is the most electronegative element, with a value of 4.0 on the PaulingRead more
The correct answer is [A] Nitrogen
Additional Information
- Nitrogen is more electronegative than Arsenic and Phosphorus, with a value of 3.04 on the Pauling scale.
- Phosphorus has an electronegativity of 2.19 on the Pauling scale, which is less than Nitrogen.
- Arsenic has an electronegativity of 2.18 on the Pauling scale, which is less than Nitrogen.
- All these elements have different electronegativity values, so they cannot be considered as having equal electronegativity.
See lessWhat is the mass of 4 mole of aluminium atoms?
The correct answer is [B] 108 grams To calculate the mass of 4 moles of aluminum atoms, we need to use the molar mass of aluminum, which is 26.98 g/mol. The molar mass is the mass of one mole of a substance, and it can be calculated by multiplying the atomic mass of the element by Avogadro's numberRead more
The correct answer is [B] 108 grams
Additional Information
A) 120 grams is not the correct answer because it is greater than the calculated mass of 107.92 grams.
B) 108 grams is the correct answer because if we multiply 4 moles (4 x 26.98), we get a total of 107.92 grams.
C) 136 grams is not the correct answer because it is greater than the calculated mass of 107.92 grams.
D) 140 grams is not the correct answer because it is greater than the calculated mass of 107.92 grams.
See lessWhich of the following represents the Boiling process?
The correct answer is [B] Isothermal change The boiling process represents an isothermal process. An isothermal process is a thermodynamic process during which the temperature of a system remains constant. In the case of boiling, the temperature of the liquid remains constant as it is converted to aRead more
The correct answer is [B] Isothermal change
Additional Information
- Adiabatic change: An adiabatic change is a thermodynamic process in which no heat is exchanged between the system and its surroundings. During an adiabatic change, the internal energy of the system may change due to work done on or by the system, but the temperature of the system will remain constant.
- Isothermal change: An isothermal process is a thermodynamic process during which the temperature of a system remains constant. In the case of boiling, the temperature of the liquid remains constant as it is converted to a gas.
- Isochoric process: An isochoric process is a thermodynamic process in which the volume of the system remains constant. During an isochoric process, the internal energy of the system may change due to work done on or by the system or due to heat transfer, but the volume of the system will remain constant.
- None of the above: This option indicates that none of the above options correctly describe the boiling process.
See lessIdentification of drugs through genomic studies is called?
The answer is [C] Pharmacogenetics The identification of drugs through genomic studies is called Pharmacogenomics. Pharmacogenomics is a field of research that combines pharmacology (the science of drugs) and genomics (the study of genes) to inform drug development and testing. It is used to identiRead more
The answer is [C] Pharmacogenetics
The identification of drugs through genomic studies is called Pharmacogenomics.
Pharmacogenomics is a field of research that combines pharmacology (the science of drugs) and genomics (the study of genes) to inform drug development and testing.
It is used to identify interindividual and interpopulation differences to guide and optimize disease treatment based on genetics.
Pharmacogenomics has identified around 800 genes if known drug targets are also considered.
See lessWhich of the following is an important objective of biotechnology in the field of agriculture?
The correct answer is [C] to increase phosphorous, nitrogen production An important objective of biotechnology in the field of agriculture is to produce pest-resistant varieties of plants. This involves taking just a beneficial gene, like insect resistance or drought tolerance, and incorporating itRead more
The correct answer is [C] to increase phosphorous, nitrogen production
An important objective of biotechnology in the field of agriculture is to produce pest-resistant varieties of plants.
This involves taking just a beneficial gene, like insect resistance or drought tolerance, and incorporating it into future generations of plants.
Biotechnology also allows for genetic diagnosis and gene therapy, which can help improve crop yield and quality by enhancing resistance to disease, pests, and environmental stress.
In addition, technology is also helping to address environmental and social concerns in an integrated way.
See lessWhich of the following are the causes of red water?
The correct answer [A] Clostridium hemolyticum The cause of red water can be attributed to Clostridium hemolyticum, Achromobacter anitratum, and Escherichia coli. Clostridium hemolyticum is a bacterium that can cause septicemia, while Achromobacter anitratum is a bacterium that infects the intestineRead more
The correct answer [A] Clostridium hemolyticum
The cause of red water can be attributed to Clostridium hemolyticum, Achromobacter anitratum, and Escherichia coli.
Clostridium hemolyticum is a bacterium that can cause septicemia, while Achromobacter anitratum is a bacterium that infects the intestine, leading to calf scours. Escherichia coli, on the other hand, can cause enteritis.
Additionally, it is known to cause urinary tract infections in infants and adults. In other words, all three of these bacteria can cause red water.
See lessThe smallest bone in mammals is ____:
The correct answer is [D] Stapes The smallest bone in mammals is the Stapes. This bone is located in the middle ear and is the smallest bone in the human body. It is a stirrup-shaped bone, and it is also the smallest of the mammalian skeleton. The Stapes is in contact with the inner ear and is dirRead more
The correct answer is [D] Stapes
The smallest bone in mammals is the Stapes.
This bone is located in the middle ear and is the smallest bone in the human body.
It is a stirrup-shaped bone, and it is also the smallest of the mammalian skeleton.
The Stapes is in contact with the inner ear and is directly responsible for transmitting sound vibrations from the eardrum to the inner ear. It is also one of three ossicles in the middle ear, making it a crucial component for hearing.
See less