Q: 63 (NDA-II/2013)


Which of the following statements is/are correct?
1. Air close to the Earth’s surface heavier.
2. Air close to the Earth’s surface contains larger quantity of water vapoor and dust particles
Select the correct answer using the code given below :
question_subject: 
Science
question_year: 
2013
question_exam: 
NDA-II
stats: 
0,240,152,32,16,312,32