Benzaldehyde reacts with a mixture of concentrated sulfuric acid and nitric acid to give (a) p-Nitrobenzaldehyde (b) o-Nitrobenzaldehyde (c) p-Nitrobenzoic acid (d) m-Nitrobenzaldehyde

Benzaldehyde reacts with a mixture of concentrated sulfuric acid and nitric
acid to give
(a) p-Nitrobenzaldehyde
(b) o-Nitrobenzaldehyde
(c) p-Nitrobenzoic acid
(d) m-Nitrobenzaldehyde
by

1 Answer

Answer :

m-Nitrobenzaldehyde
by

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Arrange the following compounds in increasing order of their acid strength. Benzoic acid, 4-Nitrobenzoic acid, 3, 4-dinitrobenzoic acid, 4-methoxy benzoic acid.

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What hazard symbol would you see on concentrated sulfuric acid?

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Which of the problems listed will occur if a lead-acid battery is allowed to remain in a discharged condition for a long period of time? A. The battery may be unable to accept a full charge. B. The electrolyte will change to lead sulfate. C. The concentrated sulfuric acid will attack the lead peroxide plates. D. The separators will harden.

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Last Answer : Answer: A

Give reason: Aluminium / Iron become passive when immersed in concentrated nitric acid.

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Last Answer : Since concentrated nitric acid is a powerful oxidising agent, it forms a protective oxide layer on the metal instantly

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Which of the following compounds yields a yellow precipitate when warmed with a mixture of iodine in aqueous sodium hydroxide? (a) Acetophenone (b) Benzaldehyde(c) Benzophenone(d) Propanal

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Acetophenone reacts with Br2 in the presence of FeCl3 to form : (a) m-Bromoacetophenone (b) m-Dibromobenzene(c) o- + p-Bromoacetophenone(d) p-Dibromobenzene

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Benzenediazonium chloride reacts with KI to form : (a) Benzenediazonium iodide (b) m-Diiodobenzene (c) Iodobenzene (d) o- plus p-Diiodobenzene

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Ethyl alcohol reacts with concentrated H2SO4 at 140°C to form (a) Acetone (b) Ethylene (c) Diethyl ether (d) Acetic acid

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Last Answer : Diethyl ether

The reaction of zinc with dilute and concentrated nitric acid, respectively, produce

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Concentrated nitric acid upon long standing turns yellowish-brown due to the formation of :

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The reaction of zinc with dilute and concentrated nitric acid, respectively, produce

Description : The reaction of zinc with dilute and concentrated nitric acid, respectively, produce

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Concentrated nitric acid upon long standing turns yellowish-brown due to the formation of :

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Last Answer : Concentrated nitric acid upon long standing turns yellowish-brown due to the formation of : A. NO B. `NO_(2)` C. `N_(2)O` D. `N_(2)O_(4)`

Most suitable material of construction for the storage of concentrated nitric acid is (A) Cast iron (B) Monel (C) Karbate (D) Aluminium or chromium alloys (Cr > 18% for cold acid)

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Last Answer : (D) Aluminium or chromium alloys (Cr > 18% for cold acid)

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Last Answer : (B) Fruit juices, milk & its products and caustic soda solution

What happens when a iron nail or a piece of aluminium wire is dipped in concentrated nitric acid?

Description : What happens when a iron nail or a piece of aluminium wire is dipped in concentrated nitric acid?

Last Answer : Iron nail or aluminium wire does not react with concentrated nitric acid. It makes iron more passive.

Raschig ring made of porcelain cannot be used for treating concentrated (A) Hydrochloric acid (B) Nitric acid (C) Alkalis (D) Sulphuric acid

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Last Answer : (C) Alkalis

Benzene reacts with concentrated HNO3 in the presence of concentrated H2SO4 to give nitrobenzene. This reaction is an example of (a) Electrophilic addition (b) Nucleophilic addition (c) Electrophilic substitution (d) Nucleophilic substitution

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Last Answer : Electrophilic substitution

Benzene reacts with concentrated HNO3 in the presence of concentrated H2SO4 to give nitrobenzene. This reaction is an example of (a) Electrophilic addition (b) Nucleophilic addition (c) Electrophilic substitution (d) Nucleophilic substitution

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