Which of the following have the same number of significant figures? (A) 0.00253 (B) 1.0003 (C) 15.0 (D) 163 Choose the…
Some Basic Concepts (Mole Concept) · Class 11 · JEE Main Previous Year Question
Which of the following have the same number of significant figures?
(A) (B) (C) (D)
Choose the correct answer:
- a
A, B and C only
- b
C and D only
- c
B and C only
- d✓
A, C and D only
A, C and D only
🧠 Three rules for sig figs
- Leading zeros do not count.
- Sandwiched zeros count.
- Trailing zeros count only if there is a decimal point.
🗺️ Count each one (A) : leading zeros skip, count → sf. (B) : every digit counts → sf. (C) : decimal is shown, trailing zero counts → sf. (D) : clean integer → sf.
So all have sf. stands alone at .
Practice this question with progress tracking
Want timed practice with adaptive difficulty? Solve this question (and hundreds more from Some Basic Concepts (Mole Concept)) inside The Crucible, our adaptive practice platform.
More JEE Main Some Basic Concepts (Mole Concept) PYQs
Choose the correct statements: (A) Weight of a substance is the amount of matter present in it. (B) Mass is the force exerted by gravity on an object. (C) Volume is the amount of space occupied by a…
Using the rules for significant figures, the correct answer for the expression 0.02858 0.1120.5702 will be:
Amongst the following statements, that which was not proposed by Dalton was:
The average molar mass of chlorine is 35.5\,g mol-1. The ratio of 35Cl to 37Cl in naturally occurring chlorine is close to:
Compounds that should not be used as primary standards in titrimetric analysis are: A. Na2Cr2O7 B. Oxalic acid C. NaOH D. FeSO4.6H2O E. Sodium tetraborate Choose the most appropriate answer from the…