State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · প্রশ্ন 98

Which of the following is also called 'white metal'?

  1. Rhodium
  2. Platinum
  3. Palladium
  4. Nickel
  5. None of the above / More than one of the above
উত্তর দেখান ও ব্যাখ্যা

উত্তর: (E) None of the above / More than one of the above

ব্যাখ্যা

'White metal' (Babbitt metal) is a group of tin/lead-based alloys used in bearings.

  • (A) ভুল

    Wrong: not called white metal.

  • (B) ভুল

    Wrong: called 'white gold' colloquially, not 'white metal'.

  • (C) ভুল

    Wrong: not called white metal.

  • (D) ভুল

    Wrong: not called white metal.

  • (E) সঠিক

    Correct: 'White metal' refers to tin- or lead-based bearing alloys, none of the listed metals.