Class X

Phenolphthalein in acidic solution is
  1. colorless
  2. pink colored
  3. yellow colored
  4. orange colored
Acid used for manufacture of fertilizers and explosives is
  1. Nitric acid
  2. Sulphuric acid
  3. phosphoric acid
  4. hydrochloric aci
If pH value is greater than 7, then solution is
  1. acidic
  2. basic
  3. neutral
  4. salty
When a metal replaces hydrogen atom then compound form is
  1. oxide
  2. ether
  3. salt
  4. alcohol
When acid reacts with metal carbonate, products are
  1. salt
  2. water
  3. carbon dioxide
  4. all of above
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