UPSC CSE Prelims 2023 Q56 — Science & Technology PYQ with Answer

Consider the following pairs :

Objects in space — Description

1. Cepheids : Giant clouds of dust and gas in space

2. Nebulae : Stars which brighten and dim periodically

3. Pulsars : Neutron stars that are formed when massive stars run out of fuel and collapse

How many of the above pairs are correctly matched?