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10th CBSE
IMPORTANT
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Write the electron dot structures for sodium, magnesium, oxygen and chlorine.

Important Questions on Metals And Non-Metals

EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 1
Why are ionic compounds soluble in water?
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10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 2

Show the formation of the following by electron transfer:

(i) NaCl, (ii) MgCl2, (iii) Na2O, (iv) MgO

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10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3B>Q 2
Why do ionic compounds have high melting points?
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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?

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
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?
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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?
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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?