Consider the following statements regarding cast iron: 1. Gray cast irons can be classified depending on the shape of graphite that may be present in the form of either flakes or globules. 2. A class of cast iron known as Malleable obtained by treating molten metal by calcium silicide. 3. Mechanite cast irons have graphite nodules but are produced by heat treating white cast irons. Which of the above statements are NOT correct?
Study how UPSC repeats — not just the papers
₹199 / 1 year · Founding Member
Full access unlocks the three things no PYQ PDF gives you:
① Cross-exam learning — see the same idea recur across CSE, CAPF, CDS and NDA.
② Topic evolution — how each idea is framed, year by year.
③ Question intelligence — every PYQ + answer, linked to related concepts and similar questions.
e.g. Round Table Conference: CDS 2017 → CSE 2017 → … → CAPF 2024
15 days free, no card required — then ₹199 for 1 year.
Start your 15-day free trial →