NDA CHEMISTRY QUIZ

Question 1:

What happen when magnesium is treated with water?

It floats on water
Form hydroxide
Form oxides
Release hydrogen gas

1,2,3

2,3,4

1,2,4

1,2,3,4

Question 2:

Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper etc. are reduced by using

Aluminium as reducing agent

Sodium as reducing agent

Carbon as reducing agent

Magnesium as reducing agent

Question 3:

Which of the following are ionic compounds?

(i) MgCl₂

(ii) CO₂

(iii) CH₃Cl

(iv) KCl

(i) and (ii)

(ii) and (iii)

(i) and (iv)

(i) and (iii)

Question 4:

Which one of the following metal is more reactive than iron but less reactive than aluminium?

Zinc

Potassium

Platinum

Magnesium

Question 5:

Two examples of metals which are poor conductors of heat are ………, ……… .

Lead and copper

Lead and mercury

Mercury and Silver

Silver and copper

Question 6:

Which one among the following is an acidic oxide?

Na₂O

SO₂

CO

Li₂O

Question 7:

Of three metals X , Y and Z . X releases lots of hydrogen gas and heat when reacts with acids, Y does not release hydrogen gas and the temperature also remained unchanged when reacts with acids and Z reacts slowly with acids and release less bubbles of hydrogen gas. Which of the following is the correct increasing order of reactivity of metals?

X < Y < Z

X < Z < Y

Y < X < Z

Y < Z < X

Question 8:

Which one among the following reacts with both HCl and NaOH?

Na₂O

K₂O

Al₂O₃

MgO

Question 9:

Which of the following metal do no react with steam?

Copper
Aluminium
Lead
Zinc

Both 1 and 4

Both 1 and 3

Both 2 and 3

Both 3 and 4

Question 10:

Which one of the following is a metallic mineral ?

Iron
Mica
Gypsum
Bauxite

Only 1

Both 1 and 4

Both 2 and 3

Both 1 and 2

NDA CHEMISTRY QUIZ - 33

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NDA CHEMISTRY QUIZ - 33

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