Recent questions tagged acids-and-bases

Identify a compound which contains replaceable hydrogen.

asked Jan 7, 2019 by meena.clay6

1 answer

The gas evolved in neutralization reaction of acid base is

asked Jan 4, 2019 by meena.clay6

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The reaction between sodium hydroxide with zinc gives product

asked Jan 4, 2019 by meena.clay6

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The reaction between an acid and metal can be considered as?

asked Jan 4, 2019 by meena.clay6

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A substance Y turns phenolphthalein colorless. It will

asked Jan 4, 2019 by meena.clay6

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A substance X, turns color of red litmus blue, it will change methyl Orange?

asked Jan 4, 2019 by meena.clay6

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Which of the following statements are correct about an aqueous solution of an acid and of a base?

asked Jan 4, 2019 by meena.clay6

1 answer

Match the following with correct response. (1) Sodium carbonate (2) Plaster of Paris (3) calcium oxychloride (4) Sodium bicarbonate (A) Fire extinguishers (B) For ornamental casting (C) For water softening (D) For bleaching wool

asked Jan 4, 2019 by meena.clay6

1 answer

A student was asked to collect apparatus from lab store, for doing experiment of pH of given sample. Identify the article which he is not supposed to pick.

asked Jan 4, 2019 by meena.clay6

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A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish orange. Which of the following would change the colour of this pH paper to greenish blue?

asked Jan 4, 2019 by meena.clay6

1 answer

A salt is dissolved in water. The pH of this salt solution was found to be 7 by measuring the pH with a universal indicator paper. The salt is most likely to be

asked Jan 4, 2019 by meena.clay6

1 answer

A solution has pH value of 5. On adding 10 mL of NaCl to it, what will be the pH of the new solution?

asked Dec 20, 2018 by meena.clay6

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Which one of the following would you need to identify the gas that evolve when you heat NaOH solution with zinc metal?

asked Dec 20, 2018 by meena.clay6

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Name the substance that on treatment with chlorine yields bleaching powder.

asked Dec 19, 2018 by meena.clay6

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Which gas is usually liberated when an acid reacts with a metal?

asked Dec 19, 2018 by meena.clay6

1 answer

Match the following with correct response. (1) Metal oxides (2) Non-metal oxides (3) Salts (4) Neutral Basses (A) Hydroxyl Irons (B) Acidic (C) basic (D) Hydroxyl Ions

asked Dec 19, 2018 by meena.clay6

1 answer

The pH of black coffee is 5.0 , Calculate corresponding hydrogen ion concentration.

asked Dec 18, 2018 by meena.clay6

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KOH is used in making of

asked Dec 18, 2018 by meena.clay6

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Corrosive effect on skin is caused by

asked Dec 18, 2018 by meena.clay6

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A substance that donates a pair of electrons to form coordinate covalent bond is called

asked Dec 18, 2018 by meena.clay6

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Phenolphthalein in acidic solution is

asked Dec 18, 2018 by meena.clay6

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True or False: Acids with a low pH and bases with a high pH are considered very dangerous.

asked Dec 18, 2018 by meena.clay6

1 answer

A liquid is considered an acid if it has a lot of __________.

asked Dec 18, 2018 by meena.clay6

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What will be the product when HNO3 reacts with NH4OH ?

asked Dec 18, 2018 by meena.clay6

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A Strong acid is same as concentrated acid. State true or false

asked Dec 18, 2018 by meena.clay6

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Which of the following statement are correct

asked Dec 18, 2018 by meena.clay6

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What is the PH of a solution which turns a red litmus blue? A) 2 B) 6 C) 8 D) 10

asked Dec 18, 2018 by meena.clay6

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Match the following with correct response. (1) Sodium hydroxide (2) Potassium hydroxide (3) Calcium hydroxide (4) Lactic acid (A) Antacid (B) caustic soda (C) curd (D) caustic potash

asked Dec 18, 2018 by meena.clay6

1 answer

Zinc reacts with an acid as well as with a base to liberate hydrogen. On the basis of this what should be the nature of the zinc metal?

asked Dec 18, 2018 by meena.clay6

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Zinc reacts with an acid as well as with a base to liberate hydrogen. On the basis of this what should be the nature of the zinc metal?

asked Dec 17, 2018 by meena.clay6

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What are the products obtained when potassium sulphate reacts with barium iodide in an aqueous medium?

asked Dec 13, 2018 by meena.clay6

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When a drop of an unknown solution X is placed on a strip of pH paper, a deep blue colour is produced . This solution should be

asked Dec 13, 2018 by meena.clay6

1 answer

Which one will change from red litmus to blue?

asked Dec 13, 2018 by meena.clay6

1 answer

$MgO + 2HCl \to X + H_2O$

asked Dec 13, 2018 by meena.clay6

1 answer