Which of the following is the closest layer to the Earth's surface in which all weather occurs?

Which figure complete the question figure in the given option.

From the given alternative words, select the one which cannot be formed by using the letters of the given word.
TRAININGROOM

The series given below contains a sequence of numbers. Identify the incorrect combination: 

56, 54, 58, 49, 66, 34

Choose the diagram that correctly represents the relationship between the squares below.
Doctor, man, actor

Find the missing (?) in the series.
NA, PC, RE, TG, ?, XK, ZM

If ‘÷’ means ‘+’; ‘ –‘ means ‘x’; ‘x’ means ‘÷’ and ‘+’ means ‘ –‘; then 111 – 21 ÷ 7 × 2 + 4 – 127=?

In the question given below , two statements are given followed by four Conclusion I, II, III and IV.You have to consider the two statements to be true even if they seem to be at variance from commonly known facts .You have to decide which of the given conclusion , if any , follow from the given statements. 

Statements
All goats are tigers.
All tigers are lions.
Conclusions :
I. All tigers are goats
II. All lions are tigers
III. No goat is a lion
IV. No lion is a goat