COMPASSLearning
RegisterLogin

CBSE Class 12 · 2006 · Foreign · d and f Block ElementsShort Answer

WhatsApp Email
What is mischmetal? Mention two of its important uses.

Solution

Mischmetal is an alloy containing about 95% lanthanoid metals and about 5% iron, with traces of S, C, Ca and Al.
Uses:
  1. It is pyrophoric — used as the 'flint' in cigarette and gas lighters.
  2. Alloyed with magnesium, it is used to make bullets, shells and tracer ammunition.

CBSE Class 12 Board · 2006 · Foreign · Subjective

Practise more: all CBSE board PYQs on d and f Block Elements →

More board questions on d and f Block Elements

  1. Transition metals are known to form interstitial compounds. The formation of interstitial compounds makes the transition metal:
    CBSE 2024View solution →
  2. Assertion (A): Zr and Hf have almost similar atomic radii.
    Reason (R): This is due to lanthanoid contraction.
    CBSE 2024View solution →
  3. Which of the following ions has the electronic configuration 3d? (Atomic numbers: Mn = 25, Co = 27, Ni = 28)
    CBSE 2023View solution →
  4. Which property of transition metals enables them to behave as catalysts?
    CBSE 2023View solution →
  5. (a) A transition element X has the electronic configuration [Ar]4s²3d³. Predict its likely oxidation states.
    CBSE 2023View solution →
  6. a) Write any two consequences of lanthanoid contraction.
    b) Name the element of the 3d series which exhibits the largest number of oxidation states. Give a reason.
    CBSE 2022View solution →