HSC Science (Computer Science) 11th Standard - Maharashtra State Board Question Bank Solutions

Why is accurate measurement crucial in science?

Solve the following question:

Round off the following quantity to two significant figures:

25.55 mL

Solve the following question:

Round off the following quantity to two significant figures:

0.00254 m

Solve the following question:

Round off the following quantity to two significant figures:

1.491 × 10⁵ mg

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Round off the following quantity to two significant figures:

199 g

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Round off the following quantity to three significant figures:

1.43 cm³

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Round off the following quantity to three significant figures:

458 × 10² cm

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Round off the following quantity to three significant figures:

643 cm²

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Round off the following quantity to three significant figures:

0.039 m

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Round off the following quantity to three significant figures:

6.398 × 10^-3 km

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Round off the following quantity to three significant figures:

0.0179 g

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Round off the following quantity to three significant figures:

79,000 m

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Round off the following quantity to three significant figures:

42,150

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Round off the following quantity to three significant figures:

649.85

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Round off the following quantity to three significant figures:

23,642,000 mm

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Round off the following quantity to three significant figures:

0.0041962 kg

Express the following sum to the appropriate number of significant figures:

2.3 × 10³ mL + 4.22 × 10⁴ mL + 9.04 × 10³ mL + 8.71 × 10⁵ mL

Solve the following question:

Express the following sum to the appropriate number of significant figures:

319.5 g − 20460 g − 0.0639 g − 45.642 g − 4.173 g

Solve the following problem:

Express the following quantity in exponential terms.

0.0003498

Solve the following problem:

Express the following quantity in exponential terms.

235.4678