Match the following columns. Column I Column II (i) An isotope of hydrogen (a) Aluminium (ii) Less reactive metal than hydrogen (b) Potassium (iii) Form amphoteric oxides (c) Tritium (iv) Form alkali (d) Platinum

(i)- (c) Hydrogen has three isotopes Tritium is one of the isotopes of hydrogen which is radioactive in nature. (ii)- (d) Platinum is a less reactive metal than hydrogen as it lies below hydrogen in the reactivity series. Hydrogen can easily react with air and water. On the other hand, platinum never reacts with air or water. (iii)- (a) Aluminium is a weak metal so its oxide is amphoteric. Amphoteric oxides are those oxides which reacts with acids as well as bases to form respective salt and hydrogen gas or water respectively. (iv)- (b) Potassium is one of the strongest metal and it is highly reactive. So, metal oxide is basic strongly and its aqueus solution is also a strong base.

Complete the following reaction: Zn ( s ) + NaOH ( aq ) → Heat

Zinc metal reacts with sodium hydroxide and gives sodium zincate and hydrogen gas. Sodium hydroxide, also known caustic soda and it is an inorganic compound. Zn ( s ) + 2 NaOH ( aq ) → ∆ Na 2 ZnO 2 ( aq ) + H 2 ( g ) Metals like zinc, lead and aluminium react with both acids and alkalies to produce hydrogen and salts. This is unique nature of these metals. Their oxides and hydroxides have both basic and acidic nature. Metal oxides which react with both acids and bases to produce salts and water are known as amphoteric oxides.

E M B I B E

All In One ICSE Chemistry>Chapter 6 - Study of First Element-Hydrogen>EXAM PRACTICE

Shikha Goel and Saleha Parvez Solutions for Chapter: Study of First Element-Hydrogen, Exercise 4: EXAM PRACTICE

Author:Shikha Goel & Saleha Parvez

Shikha Goel Chemistry Solutions for Exercise - Shikha Goel and Saleha Parvez Solutions for Chapter: Study of First Element-Hydrogen, Exercise 4: EXAM PRACTICE

Attempt the practice questions on Chapter 6: Study of First Element-Hydrogen, Exercise 4: EXAM PRACTICE with hints and solutions to strengthen your understanding. All In One ICSE Chemistry solutions are prepared by Experienced Embibe Experts.

Questions from Shikha Goel and Saleha Parvez Solutions for Chapter: Study of First Element-Hydrogen, Exercise 4: EXAM PRACTICE with Hints & Solutions

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Chemistry>Chapter 6 - Study of First Element-Hydrogen>EXAM PRACTICE>Q 18

Solubility of hydrogen in water is

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Chemistry>Chapter 6 - Study of First Element-Hydrogen>EXAM PRACTICE>Q 20

Match the following columns.

Column I	Column II
(i) An isotope of hydrogen	(a) Aluminium
(ii) Less reactive metal than hydrogen	(b) Potassium
(iii) Form amphoteric oxides	(c) Tritium
(iv) Form alkali	(d) Platinum