Answers

2016-02-27T21:06:39+05:30
Because the angle of the sun and earth is greater than the noon so during noon only red light enters our eyes due to refraction.

1 5 1
but in ncert book it is different
it is according to a book written by stephen hawking
2016-02-27T21:26:55+05:30
Sky appears red at evening because the sun sets and the colour of the sky mixes with the colour of the sun and makes a mixture of colours

0
it is wrong because sky itself dont have any color.