General
✓✗Natural source of tartaric acid is
- Tamarind
- Curd
- Tomatoes
- All
General
✓✗Bee’s sting contains
- an acidic liquid
- a salt solution
- a strong alkaline liquid
- an alcohol
General
✓✗Gypsum has_____ molecule(s) of water of crystallization.
- Half
- One
- Two
- Seven
General
✓✗Complete the reaction
-
-
- CaO
-
General
✓✗An example of a pentahydrate salt is
- CaSO4
- Sodium carbonate
- Copper sulphate
- Iron sulphate
General
✓✗An acid is_____
- a proton donor
- a proton acceptor
- electron donor
- electron acceptor
General
✓✗If Phenolphthalein is added on soap, the colour will change to
- red
- blue
- pink
- no change
General
✓✗The number of replaceable hydrogen atoms present in one molecule of an acid is its:
- acidity
- basicity
- both ‘a’ and ‘b’
- None of these
General
✓✗Which of the following is not a natural indicator?
- Litmus
- Turmeric
- Red cabbage extract
- Methyl orange
General
✓✗Copper sulphate is used:
- as fungicide
- in electroplating
- in dyeing
- all the above