Chapter # 08 (Reactivity)

MCQ: Metals difficult to oxidize are called

  1. weak metals
  2. strong metals
  3. noble metals
  4. none of above

Answer 

MCQ: On contact with oxygen, Rubidium forms

  1. normal oxide
  2. per oxide
  3. super oxide
  4. none of above

Answer 

MCQ: Most metallic among following is

  1. Na
  2. K
  3. Al
  4. B

Answer 

MCQ: As we move across period electronegativity

  1. decreases
  2. increases
  3. remains same
  4. becomes zero

Answer 

MCQ: As we move across period from left to right, reactivity of metals with oxygen

  1. decreases
  2. increases
  3. remains same
  4. zero

Answer 

MCQ: Sodium metal is soft due to

  1. weak metallic bond
  2. strong metallic bond
  3. large size
  4. small size

Answer 

MCQ: Elements which have properties of metals and non-metals are

  1. amorphous
  2. crystalline
  3. metalloids
  4. none of above

Answer 

MCQ: As size of atom increases down group, electro positivity

  1. increases
  2. decreases
  3. remains same
  4. none of above

Answer 

MCQ: Bromine is a non-metal in

  1. solid state
  2. liquid state
  3. gaseous state
  4. plasma state

Answer 

MCQ: As compare to beryllium, magnesium is

  1. less electropositive
  2. more electropositive
  3. large in size
  4. both B and C

Answer 

MCQ: Oxide of aluminum is

  1. acidic
  2. basic
  3. neutral
  4. amphoteric

Answer 

MCQ: Halogens react with metals to form

  1. Halides
  2. oxides
  3. halogen compounds
  4. hydrogenated compounds

Answer 

MCQ: Most acidic among following is

  1. HF
  2. HCl
  3. HBr
  4. HI

Answer 

MCQ: Tendency of a metal to loose electron is called

  1. electronegativity
  2. electro positivity
  3. electroplating
  4. electrolysis

Answer 

MCQ: Non-metals are poor conductors of

  1. heat
  2. electricity
  3. both A and B
  4. none of above

Answer 

MCQ: Metallic oxides are

  1. basic in nature
  2. acidic in nature
  3. slightly acidic in nature
  4. neutral

Answer 

MCQ: Boron is a

  1. metal
  2. metalloid
  3. non-metal
  4. gas

Answer 

MCQ: As we move across period basic character of oxides

  1. increases
  2. remains same
  3. decreases
  4. becomes zero

Answer