Class XI

In Universal indicators, weak alkalis are indicated through a pH of
  1. 4 to 7
  2. 8 to 10
  3. 10 to 14
  4. 7 to 14
Metal that burns even more brightly than Magnesium (Mg) is
  1. Zinc
  2. Mercury
  3. Zirconium
  4. Diamond
PH value above 7 is
  1. Acidic
  2. Alkaline
  3. Neutral
  4. Basic
PH value above 7 is
  1. Acidic
  2. Alkaline
  3. Neutral
  4. Basic
NH4Cl(s) + NaOH →
  1. Na2CO3 + H2+NO2
  2. Na2CO3.(H2O)5 + HCl
  3. NaCl + H2O + NH3
  4. NaCl + HNO3
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