Directions:- Study the following information carefully to answer the question given below.

Six chemicals L, M, N, O, P and Q are kept in bottles of different colours viz. green, red, blue, white, pink and violet, not necessarily in the same order. The bottles are arranged from left to right, again not necessarily in the same order.
Chemical M is kept in a white bottle. Chemical L is not kept in a green bottle and is kept to the immediate left of the violet bottle. Chemical O is kept in the blue bottle and is kept exactly between the bottles containing chemicals L and M. The red bottle is at the extreme left end. The bottles containing chemical Q is not kept at either of the ends. The green bottle is kept at the extreme right end. Chemical P is not kept near the white bottle.

Which bottle contains chemical Q?

Q. Directions:- Study the following information carefully to answer the question given below.

Six chemicals L, M, N, O, P and Q are kept in bottles of different colours viz. green, red, blue, white, pink and violet, not necessarily in the same order. The bottles are arranged from left to right, again not necessarily in the same order.
Chemical M is kept in a white bottle. Chemical L is not kept in a green bottle and is kept to the immediate left of the violet bottle. Chemical O is kept in the blue bottle and is kept exactly between the bottles containing chemicals L and M. The red bottle is at the extreme left end. The bottles containing chemical Q is not kept at either of the ends. The green bottle is kept at the extreme right end. Chemical P is not kept near the white bottle.

If all the six chemicals are arranged alphabetically from left to right, the positions of how many will remain unchanged?

Q. Directions:- Study the following information carefully to answer the question given below.

Six chemicals L, M, N, O, P and Q are kept in bottles of different colours viz. green, red, blue, white, pink and violet, not necessarily in the same order. The bottles are arranged from left to right, again not necessarily in the same order.
Chemical M is kept in a white bottle. Chemical L is not kept in a green bottle and is kept to the immediate left of the violet bottle. Chemical O is kept in the blue bottle and is kept exactly between the bottles containing chemicals L and M. The red bottle is at the extreme left end. The bottles containing chemical Q is not kept at either of the ends. The green bottle is kept at the extreme right end. Chemical P is not kept near the white bottle.

Which of the following combinations of chemical and bottle is correct?

Q. Directions:- Study the following information carefully to answer the question given below.

Six chemicals L, M, N, O, P and Q are kept in bottles of different colours viz. green, red, blue, white, pink and violet, not necessarily in the same order. The bottles are arranged from left to right, again not necessarily in the same order.
Chemical M is kept in a white bottle. Chemical L is not kept in a green bottle and is kept to the immediate left of the violet bottle. Chemical O is kept in the blue bottle and is kept exactly between the bottles containing chemicals L and M. The red bottle is at the extreme left end. The bottles containing chemical Q is not kept at either of the ends. The green bottle is kept at the extreme right end. Chemical P is not kept near the white bottle.

Four of the following five options are alike in a certain way based on their positions in the above arrangement and so form a group. Which is the one that does not belong to the group?

Q. Why are some liquid medicines and chemicals kept in a dark Coloured bottle?

Q. A chemist opened a cupboard to find four bottles containing water solutions, each of which has lost its label. Bottles 1, 2 and 3 contained colourless solutions, while Bottle 4 contained a blue solution. The labels from the bottles were lying scattered on the floor of the cupboard.They were : copper (II) sulphate, sodium carbonate, lead-nitrate and hydrochloric acid.
By mixing samples of the contents of the bottles in pairs, the chemist made the following observations :
(i) Bottle 1 + Bottle 2 : white precipitate
(ii) Bottle 1 +. Bottle 3 : white precipitate
(iii) Bottle 1 + Bottle 4 : white precipitate
(iv) Bottle 2 + Bottle 3 : colorless gas evolved
(v) Bottle 2 + Bottle 4 : no visible reaction
(vi) Bottle 3 + Bottle 4 : blue precipitate
Chemical formula of white precipitate in observation (i) is __________.