UGC NET/JRF Environmental Science Question Paper– III: December 2012

Jagranjosh.com will provide questions from the respective segments for the benefit of the aspirants preparing for UGC NET/ JRF/ SLET recruitment exams. The question paper will help in the practice and thereby further the preparation procedure of the students.

1. In a multiple regression model, the fratio is used to test the
(A) Variance of the data
(B) Standard error of mean
(C) R2 value
(D) Overall goodness of fit of the model.

2. If the mean of a sample is 20, thestandard error of mean is 1 and the tstatistic
for 95% level of confidence is 2.5, the population mean will be in the range
(A) 17.5 to 22.5
(B) 15 to 25
(C) 20 to 25
(D) 15 to 20

3. The third moment about the mean of a distribution of a set of observations is a measure of
(A) Mode
(B) Skewness
(C) Kurtosis
(D) Variance

4. Consider an air shed over a city in the form of a rectangular box. The wind velocity is 5 m/sec normal to left face of the box. The length of the box along the direction of wind is 10 km and mixing height is 1 km. Assuming rapid mixing of the pollutants which are conservative in nature, the concentration of the pollutants in the city would reach 63% of its final value in
(A) 2,000 sec
(B) 5,000 sec
(C) 10,000 sec
(D) 1,000 sec

Click Here to find Environmental Science December 2012 complete question paper