21
As per the provisions of the Factories Act, 1948, match the items of List-I with the items of List-II and choose the correct answer from the code given below.
| List-I | List-II |
| (a) Cool drinking water during the hot season | (i) 150 workers |
| (b) Employment of safety officer | (ii) More than 250 workers |
| (c) First aid box | (iii) More than 500 workers |
| (d) Ambulance room | (iv) 1000 or more workers |

