Direct change of gas to solid without changing in to

Which element is used as a cooling medium for the Large Hadron Collider (LHC) and superconducting magnets in MRI scanners?

ELISA test can be used to diagnose:

Which element is most abundant by mass in the earth's crust?

What is the Fahrenheit equivalent of 600°C?

What is the SI unit of temperature?

Consider the following statements in regards to INS 2B (ISRO NanoSatellite 2B):

1. The INS 2B is a nanosatellite

How many satellites of the Indian Regional Navigation Satellite System (IRNSS) are currently operational? 

_________ is a good conductor of heat, but a bad conductor of electricity.

Which organ is primarily affected by the disease "Xerophthalmia"?

Which instrument is used to measure altitudes by determining the boiling point of water at a given altitude?