A student is studying the properties of acetic acid. List two physical properties of acetic acid he observes. What happens when he adds a pinch of sodium hydrogen carbonate to this acid ? Write any two observations.
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Assertion (A) : Formic acid is a stronger acid than acetic acid. Reason (R) : Formic acid is an organic acid.
(b) Formic acid is stronger than acetic acid due to its chemical composition. Formic acid is an organic acid as well as active acid in an organic acid.
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Match List-I with List-II and select the correct answer from the codes given below: List-I (Towns) List-II (Industry) (A) Pittsburg (1) Textile
(b) A – 2 ; B – 1 ; C – 4 ; D – 3
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Match List-I with List-II and select the correct answer from the codes given below: List-I (Crop) List-II (Main Producing area) (A) Coconut (1) Kenya
(b) The oil refineries of Iran are located in Abadan. Abadan is a city in and the capital of Abadan County, Khuzestan province, Iran. It lies on Abadan Island, 53...
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Match List-I with List-II and select the correct answer from the codes given below: List-I (Mineral) List-II (Area of production) A. Coal 1. Highveld
(b) Karaganda Basin is known for coal production. Karagandy, more commonly known by its Russian name Karaganda, is the capital of Karagandy province in Kazakhstan. Highveld is known for gold...
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While performing an experiment a student observes that when he heats some green crystals in a boiling tube, the colour
Observation: The green colour of ferrous sulphate crystals changes to brownish black ferric oxide and smell of burning sulphur is observed. Result: Heating of ferrous sulphate is a thermal decomposition reaction because of ferrous sulphate breaks down into simpler compounds-Fe2O3, SO2 and SO3. 2FeSO4(s) +Heat → Fe2O3(s) +...
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List three properties of sodium in which it differs from the general physical properties of most metals.
Three properties of sodium are : (i) Sodium is so soft that it can be cut with a knife.
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student is studying the properties of acetic acid in his school laboratory.
Physical Properties : (i) Smell like vinegar (ii) Colourless liquid. Chemical Properties : (i) Turns blue litmus red (ii) Gives brisk effervescence with sodium carbonate
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Out of the following list of chemicals, select those which are required to study the prescribed four properties of acetic acid in the laboratory.
Blue litmus solution, water, sodium hydrogen carbonate and calcium hydroxide solution
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While studying saponification reaction for the preparation of soap, a teacher suggested to a student to add a small quantity of common salt
Common salt is added in saponification reaction, as it helps in the precipitation of soap by decreasing the solubility of soap.
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