A _________ is a substance that gives hydroxide ions in the presence of water.A. Base B. Salt C. Acid D. Hydroxide

Academic Chemistry NCERT Class 10

A Base is a substance that gives hydroxide ions in the presence of water.

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Updated on: 10-Oct-2022

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One of the following is a medicine for indigestion. This is:(a) Sodium hydroxide (b) Manganese dioxide (c) Magnesium hydroxide (d) Potassium hydroxide
What ions are present in the solutions of following substances? (write the symbols only)(i) Hydrochloric acid (ii) Nitric acid(iii) Sulphuric acid (iv) Sodium hydroxide(v) Potassium hydroxide (vi) Magnesium hydroxide
How is the concentration of hydroxide ions (OH-) affected when excess base is dissolved in water?
Sodium carbonate is a basic salt because it is a salt of(a) strong acid and strong base(b) weak acid and weak base(c) strong acid and weak base(d) weak acid and strong base
Multiple-choice questions:1. The two types of litmus paper are:-(a) blue and orange (b) yellow and red (c) red and orange (d) blue and red2. Non-metallic oxides react with water to form:(a) acids (b) bases (c) salts (d) none of these3.Slaked lime is a common name of: (a) calcium oxide (b) calcium hydroxide (c) calcium carbonate (d) none of these4. The base used in antacid is:(a) magnesium hydroxide (b) sodium hydroxide (c) calcium hydroxide (d) none of these5. What is the salt in the reaction: NaOH + HCl ----> NaCl + H2O(a) NaOH (b) HCl (c) NaCl (d) H2O6. Which of the following is an acidic salt?(a) NaCl (b) Zn(NO)2 (c) ZnSO4 (d) NaHSO4
Write the chemical equation for the following reactions:1. Calcium hydroxide reacts with nitric acid.2. Acetic acid reacts with calcium hydroxide.3. Hydrochloric acid reacts with sodium hydroxide.4. Ammonium hydroxide reacts with sulphuric acid.
What is acid, base, and salt?
A student measured the pH values of four solutions A, B, C and D which were found to be 4, 1, 13 and 11 respectively. Which of the following statements are correct about these solutions?(a) A is strong acid and B is weak acid (b) B is strong acid and D is weak base (c) D is strong base and C is weak base (d) C is strong base and A is weak acid (1) (a) and (b) (2) (b) and (c) (3) (c) and (d) (4) (b) and (d)
Mark ‘T’ if the statement is true and ‘F’ if it is false:(i) Nitric acid turns red litmus blue. (T/F)(ii) Sodium hydroxide turns blue litmus red. {T/F)(iii) Sodium hydroxide and hydrochloric acid neutralise each other and form salt and water. (T/F)(iv) Indicator is a substance which shows different colours in acidic and basic solutions. . (T/F)(v) Tooth decay is caused by the presence of a base. (T/F)
Hydroxide
Chlorine reacts with saturated hydrocarbons at room temperature in the(a) absence of sunlight (b) presence of sunlight(c) presence of water(d) presence of hydrochloric acid
Name the gas produced when aluminium foil reacts with:(a) dilute hydrochloric acid.(b) Sodium Hydroxide solution.
How is neutralization of a carbonate with an acid different from the neutralisation of an oxide or a hydroxide?
Explain acid, base and salt?
Bee stings can be treated with:(a) Vinegar (b) Sodium hydrogencarbonate (c) Potassium hydroxide (d) Lemon juice

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