SSC CHSL Tier-2 has objective papers testing mathematical abilities, reasoning, English and general awareness, along with a skill or typing test for relevant posts. The Tier-2 papers carry negative marking as per the scheme in the notification. Only candidates who qualify Tier-1 are called for Tier-2. The final merit is based on Tier-2 marks, subject to qualifying the skill test. Always confirm the exact pattern from the official SSC notification.