Arrange the following steps involved in the prepartion of oxygen from `KClO_(3)` in proper order.
(a) Content of the test tube is heated.
(b) A mixture of finely ground `KClO_(3)andMnO_(2)` is taken in a test tube.
(c) The open end of the test tube is plugged with cotton.
(d) Delivery tube is taken out.
(e) The test tube is fixed in a slanting position.
(f) Bunsen burner is put off.
(g) Oxygen is collected by downward displacement of water.

Options

A. b c d a e f g
B. e f c b d a g
C. a b c d f g e
D. b c e a g d f

Explanation

To arrange the steps involved in the preparation of oxygen from potassium chlorate (KClO3) in proper order, we can follow these steps:

1. **Step 1**: Take a mixture of finely ground KClO3 and MnO2 in a test tube.
(This is the initial step where the reactants are prepared.)

2. **Step 2**: Plug the open end of the test tube with cotton.
(This step ensures that no gas escapes during the reaction.)

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