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পদার্থ বিজ্ঞান

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1. MCQPractice set · Question 1

SI system-এ length-এর base unit কোনটি?

a.
centimetre
b.
metre
c.
kilometre
d.
inch

Correct answer: b

SI-এর সাতটি base unit-এর একটি হলো length-এর metre (m)।

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2. MCQPractice set · Question 2

SI system-এ mass-এর base unit কোনটি?

a.
gram
b.
tonne
c.
kilogram
d.
pound

Correct answer: c

SI-তে mass-এর base unit kilogram (kg); gram হলো এর decimal submultiple-এর ভিত্তি।

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3. MCQPractice set · Question 3

Time-এর SI base unit কোনটি?

a.
minute
b.
hour
c.
second
d.
day

Correct answer: c

Time-এর SI base unit হলো second, প্রতীক s।

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4. MCQPractice set · Question 4

Electric current-এর SI base unit কী?

a.
volt
b.
ampere
c.
ohm
d.
coulomb

Correct answer: b

Electric current-এর base unit ampere (A)। Volt ও ohm derived unit।

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5. MCQPractice set · Question 5

Thermodynamic temperature-এর SI base unit কোনটি?

a.
degree Celsius
b.
degree Fahrenheit
c.
kelvin
d.
calorie

Correct answer: c

Thermodynamic temperature-এর SI base unit kelvin (K)।

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6. MCQPractice set · Question 6

Amount of substance-এর SI base unit কী?

a.
mole
b.
gram
c.
litre
d.
candela

Correct answer: a

Amount of substance-এর base unit mole (mol)।

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7. MCQPractice set · Question 7

Luminous intensity-এর SI base unit কোনটি?

a.
lumen
b.
lux
c.
candela
d.
watt

Correct answer: c

Luminous intensity-এর SI base unit candela (cd)। Lumen ও lux derived unit।

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8. MCQPractice set · Question 8

SI system-এ মোট কয়টি base unit আছে?

a.
5
b.
6
c.
7
d.
9

Correct answer: c

SI system সাতটি base quantity-এর জন্য সাতটি base unit নির্ধারণ করে।

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9. MCQPractice set · Question 9

নিচের কোনটি SI base quantity নয়?

a.
length
b.
mass
c.
force
d.
time

Correct answer: c

Force একটি derived quantity; এর SI unit newton।

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10. MCQPractice set · Question 10

নিচের কোনটি SI base unit নয়?

a.
metre
b.
second
c.
newton
d.
kelvin

Correct answer: c

Newton হলো force-এর coherent derived unit, base unit নয়।

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