MEDIUM
10th CBSE
IMPORTANT
Earn 100

Why do ionic compounds have high melting points?

Important Questions on Metals And Non-Metals

MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 1

A small piece of sodium is dropped into a beaker containing water. Which of the following observations are incorrect?

MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2
Which of the following reactions is not possible?
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 3
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 4
Which of the following metals are obtained by the electrolysis of their chlorides in the molten state?
(i) Na (ii) Ca (iii) Fe (iv) Cu
HARD
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 5
2 mL each of concentrated HCI, HNO3 and a mixture of concentrated HCI and concentrated HNO3 in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 1
Why is aluminium called a self-protecting metal?
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2
In nature, metal A is found in the free state, while metal B is found in the form of its compounds. Which of these two metals will be near the top of the reactivity series?
MEDIUM
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 3
Which one of the metals in the following group are (a) most reactive (b) least reactive
Au, Na, Cu, Ca?