NDA CHEMISTRY QUIZ - 33

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Question 1:

What happen when magnesium is treated with water?

  1. It floats on water
  2. Form hydroxide
  3. Form oxides
  4. Release hydrogen gas

Question 2:

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

Question 3:

Which of the following are ionic compounds?

(i) MgCl2

(ii) CO2

(iii) CH3Cl

(iv) KCl

Question 4:

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

Question 5:

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

Question 6:

Which one among the following is an acidic oxide?

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?

Question 8:

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

Question 9:

Which of the following metal do no react with steam?

  1. Copper
  2. Aluminium
  3. Lead
  4. Zinc

Question 10:

Which one of the following is a metallic mineral ? 

  1. Iron 
  2. Mica 
  3. Gypsum
  4. Bauxite