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Question 1 of 10
1. Question
Choose the correct order of the following compounds in their increasing order of electronic affinity.
Correct
The fewer valence electrons an atom has, the least probable it’s going to advantage electrons. Electron affinity decreases down the corporations and from proper to left throughout the durations at the periodic desk due to the fact the electrons are located in a better strength degree a long way from the nucleus, therefore a lower from its pull.
Incorrect
The fewer valence electrons an atom has, the least probable it’s going to advantage electrons. Electron affinity decreases down the corporations and from proper to left throughout the durations at the periodic desk due to the fact the electrons are located in a better strength degree a long way from the nucleus, therefore a lower from its pull.
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Question 2 of 10
2. Question
Choose the correct order of the following compounds in their decreasing order of ionization energy.
Correct
Ionization power refers to the quantity of power had to remove an electron from an atom. Ionization power decreases as we move down a group. Ionization power will increase from left to proper throughout the periodic table.
Incorrect
Ionization power refers to the quantity of power had to remove an electron from an atom. Ionization power decreases as we move down a group. Ionization power will increase from left to proper throughout the periodic table.
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Question 3 of 10
3. Question
Among the following statements, choose the statement which is incorrect?
Correct
SeF4 (Selenium tetrafluoride) has a see-noticed form ( there are five areas of electron density) on the identical time as CH4 (Methane) is tetrahedral. Selenium (Se) has an oxidation state of +four in SeF4 form. Its form withinside the gaseous section is similar to that of SF4 (Methane), having a see-observed form.
Incorrect
SeF4 (Selenium tetrafluoride) has a see-noticed form ( there are five areas of electron density) on the identical time as CH4 (Methane) is tetrahedral. Selenium (Se) has an oxidation state of +four in SeF4 form. Its form withinside the gaseous section is similar to that of SF4 (Methane), having a see-observed form.
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Question 4 of 10
4. Question
The acidity of diprotic acid in an aqueous solution increases in the order.?
Correct
Because bond dissociation enthalpy decreases as atomic length will increase. Shorter is the bond better might be the energy. So, down the group, the bond period will increase and so the bond energy decreases, and accordingly, it’ll require little or no strength to interrupt the bond and so the bond dissociation enthalpy decreases down the group.
Incorrect
Because bond dissociation enthalpy decreases as atomic length will increase. Shorter is the bond better might be the energy. So, down the group, the bond period will increase and so the bond energy decreases, and accordingly, it’ll require little or no strength to interrupt the bond and so the bond dissociation enthalpy decreases down the group.
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Question 5 of 10
5. Question
The agricultural field that produces maximum methane gas into the atmosphere is?
Correct
Rice is grown in flooded fields, a scenario that depletes the soil of oxygen. Soils that are anaerobic (missing oxygen) permit the microorganism that produces methane from decomposing natural to be counted to thrive. Some of this methane then bubbles to the surface, however, the maximum of it’s far subtle again into the ecosystem via the rice flora themselves. Hence, the rice Paddy discipline produces the most methane fuel line into the ecosystem.
Incorrect
Rice is grown in flooded fields, a scenario that depletes the soil of oxygen. Soils that are anaerobic (missing oxygen) permit the microorganism that produces methane from decomposing natural to be counted to thrive. Some of this methane then bubbles to the surface, however, the maximum of it’s far subtle again into the ecosystem via the rice flora themselves. Hence, the rice Paddy discipline produces the most methane fuel line into the ecosystem.
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Question 6 of 10
6. Question
Which of the following alcohol is formed when isopropyl methyl ether is treated with cold hydrogen iodide?
Correct
When ethers (class of organic compounds) are handled with sturdy acid withinside the presence of a nucleophile, they may be cleaved to offer alcohols and alkyl halides. If the ether (class of organic compounds) is on a number one carbon (C) this could arise via an SN2 pathway.
Incorrect
When ethers (class of organic compounds) are handled with sturdy acid withinside the presence of a nucleophile, they may be cleaved to offer alcohols and alkyl halides. If the ether (class of organic compounds) is on a number one carbon (C) this could arise via an SN2 pathway.
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Question 7 of 10
7. Question
From the following which is the incorrect statement about vinylic alcohols?
Correct
Under everyday conditions, vinyl alcohol (C2H4O) converts (tautomerizes) to acetaldehyde (C2H4O). At room temperature, acetaldehyde (C2H4O) is extra strong than vinyl alcohol (C2H4O) via way of means of 42.7 kJ/mol. This tautomerization (Tautomers are isomers of a compound) may be catalyzed through the photochemical process.
Incorrect
Under everyday conditions, vinyl alcohol (C2H4O) converts (tautomerizes) to acetaldehyde (C2H4O). At room temperature, acetaldehyde (C2H4O) is extra strong than vinyl alcohol (C2H4O) via way of means of 42.7 kJ/mol. This tautomerization (Tautomers are isomers of a compound) may be catalyzed through the photochemical process.
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Question 8 of 10
8. Question
Which of the following when heated with aqueous solution gives phenol?
Correct
Upon warming with water, these diazonium salts finally hydrolyze to phenols. On hydrolysis of Benzene diazonium chloride, Nitrogen molecules escape as nitrogen gas. The OH group of water attacks the vacant site left after the removal of nitrogen gas. This results in the formation of phenol.
Incorrect
Upon warming with water, these diazonium salts finally hydrolyze to phenols. On hydrolysis of Benzene diazonium chloride, Nitrogen molecules escape as nitrogen gas. The OH group of water attacks the vacant site left after the removal of nitrogen gas. This results in the formation of phenol.
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Question 9 of 10
9. Question
Which of the following reactants when reacted with phenols gives Picric acid?
Correct
Nowadays picric acid (C6H3N3O7) is ready via way of means of treating phenol (C6H6O) first with concentrated sulfuric acid (H₂SO₄) which converts it to phenol-2,4-disulfuric acid (Phenoldisulfonic acid) after which with concentrated nitric acid (HNO₃) to get 2,4,6-trinitrophenol (picric acid).
Incorrect
Nowadays picric acid (C6H3N3O7) is ready via way of means of treating phenol (C6H6O) first with concentrated sulfuric acid (H₂SO₄) which converts it to phenol-2,4-disulfuric acid (Phenoldisulfonic acid) after which with concentrated nitric acid (HNO₃) to get 2,4,6-trinitrophenol (picric acid).
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Question 10 of 10
10. Question
Phenol undergoes ionization to become more stable by reacting with which of the following chemical species?
Correct
Phenol (C6H6O)undergoes ionization to emerge as greater strong via way of means of reacting with negative ions because the negative rate is not totally localized at the oxygen (O) however is unfolds out across the entire ion. Spreading the rate round makes the ion greater strong than it might be if all of the rates remained at the oxygen (O).
Incorrect
Phenol (C6H6O)undergoes ionization to emerge as greater strong via way of means of reacting with negative ions because the negative rate is not totally localized at the oxygen (O) however is unfolds out across the entire ion. Spreading the rate round makes the ion greater strong than it might be if all of the rates remained at the oxygen (O).