Which of the following are ozone-depleting substances?

A. Chlorofluorocarbons (cfcs)
B. Carbon dioxide
C. Carbon monoxide
D. Acetylene

Explanation: CFCs are chemicals that contribute to the depletion of the ozone layer in the Earth's atmosphere.

The infrared radiation by the sun is strongly absorbed by:

A. Carbon dioxide
B. Water vapors
C. Ozone
D. None of these

Explanation: Carbon dioxide and Water vapors both are effective at absorbing infrared radiation from the sun, contributing to the greenhouse effect but Carbon dioxide is more responsible for absorbing infrared radiation from the sun.

Backed by USA, Pakistan, Saudi Arabia and other Strategic allies, Talban developed as a politico-religious force. When eventually the seized power?

A. 1980
B. 1996
C. 1998
D. 1999

The moon rotates on its axis in how many days?

A. 14.8 days
B. 17.5 days
C. 29.7 days
D. 27.3 days

When in the part of its orbit closest to the Sun, Pluto has an atmosphere of nitrogen and methane similar to Triton’s, but what happens when it is farther from the Sun ?

A. These gases are not present
B. These gases are like plasma
C. These gases are frozen
D. These gases are volatile

International Security Assistance Force (ISAF) to take all measures necessary to fulfill its mandate of assisting the Afghan Interim Authority in maintaining security was established on:

A. December 20, 2011
B. December 20, 2010
C. December 20, 2004
D. December 20, 2001

The sun has a __________ year solar cycle during which its activity increases and decreases.

A. 10
B. 11
C. 12
D. 13

Which region of the Moon is known as Dark side?

A. Equator
B. South pole
C. North pole
D. None of these

At what temperature are Celsius and Fahrenheit equal?

A. -40 degree
B. 40 degree
C. -10 degree
D. 10 degree

Second largest ethnic group in Afghanistan is:

A. Uzbek
B. Tajik
C. Hazaras
D. Tazters