Which of the following country approved the commercial cultivation of GM Mustard?

Three of the following are alike in a certain way and make a group. Which one is not from that group?

Find the odd one out.

1) Brick 2) Heart 3) Club 4) Spade

Find out the odd letter/letters pair from the given alternatives.

Find the odd one out: 

Four number-pairs have been given, out of which, three are alike in some manner and one is different. Select the number-pair that is different.

Find the odd number pair from the given alternatives.

In the following question, select the option which is different from the other three options.

Three of the following four letter-clusters are alike in a certain way and one is different. Pick the odd one out.