Gk Questions with AnswersChemistry Gk Questions and Answers
| 29. | Lactic acid is present in | ||
|---|---|---|---|
| A. Grapes | |||
| B. Sour milk | |||
| C. Lemon juice | |||
| D. Vinegar | |||
| Answer | ||
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| 30. | Which of the following is used in softening of hard water? | ||
|---|---|---|---|
| A. Baking soda | |||
| B. Washing soda | |||
| C. Plaster of Paris | |||
| D. Bleaching powder | |||
| Answer | ||
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| 31. | Mason was discovered by | ||
|---|---|---|---|
| A. Seaburg | |||
| B. Powell | |||
| C. Yukawa | |||
| D. Anderson | |||
| Answer | ||
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| 32. | Red litmus paper is converted into blue in solution of | ||
|---|---|---|---|
| A. Salt | |||
| B. Base | |||
| C. Acid | |||
| D. None of these | |||
| Answer | ||
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