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Significant figures



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Q1. How many significant figures are there in 0.002000?

(a) 1
(b) 2
(c) 3
(d) 4

Q2. Using the proper number of significant figures 6 X 6 equals to

(a) 3
(b) 4
(c) 36
(d) 40

Q3. . How many significant numbers are there in 420?

(a) 1
(b) 2
(c) 3
(d) 0

Q4. 0.009046879855, round off the number to three significant figures

(a) 0.0905
(b) 0.0904
(c) 0.09046
(d) 0.09035

Q5. Number of digits that are reasonably sure, called significant figures.

(a) Correct
(b) Incorrect
(c) Probably correct
(d) None of the mentioned

Q6. Correctly rounded, the product 3.000 cm ? 30.0 cm is

(a) 9.0 x 101 cm2
(b) 9.000 x 101 cm2
(c) 9 x 101 cm2
(d) 9.00 x 101 cm2

Q7. Correctly rounded, the quotient 5.000 g / 50.0 mL is

(a) 0.10 g/mL
(b) 0.1 g/mL
(c) 0.100 g/mL
(d) 0.1000 g/mL

Q8. Standard form of 2145.67 is

(a) 2.14*103
(b) 2.14567*103
(c) 0.214*104
(d) None of the mentioned

Q9. The theoretical production rate of a chemical is 1?g/(mL)(min.). What is the actual production rate of the chemical in lb mol/ (day)(ft3) with an efficiency of 98%?

(a) 0.088
(b) 0.08
(c) 0.0449
(d) 0.529

Q10. The given numbers are shown with their significant figures respectively. Find out the wrong one option?

(a) 26.24 and 4
(b) 24000. and 5
(c) 0.000460 and 3
(d) 28000.0 and 5


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Assertion : Cathode Rays Do Not Travel In Straight Lines. Reason : Cathode Rays Penetrate Through Thick Sheets.

Modified 246 Year Ago

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425
246 Year Ago

Assertion : Cathode Rays Do Not Travel In Straight Lines. Reason : Cathode Rays Penetrate Through Thick Sheets.

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0 Answer
417 views

E/m Ratio Was Determined By

Modified 246 Year Ago

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246 Year Ago

E/m Ratio Was Determined By

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402 views

Magnitude Of K.E. In An Orbit Is Caused By

Modified 246 Year Ago

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246 Year Ago

Magnitude Of K.E. In An Orbit Is Caused By

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0 Answer
342 views

The Minimum Real Charge On Any Particle Which Can Exist Is

Modified 246 Year Ago

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246 Year Ago

The Minimum Real Charge On Any Particle Which Can Exist Is

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338 views

Assertion : Cathode Rays Are A Stream Of α -particles. Reason : They Are Generated Under High Pressure And High Voltage.

Modified 246 Year Ago

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338
246 Year Ago

Assertion : Cathode Rays Are A Stream Of α -particles. Reason : They Are Generated Under High Pressure And High Voltage.

0 votes
0 Answer
323 views

The Average Distance Of An Electron In An Atom From Its Nucleus Is Of The Order Of

Modified 246 Year Ago

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246 Year Ago

The Average Distance Of An Electron In An Atom From Its Nucleus Is Of The Order Of

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