Related Questions

Read the paragraph and answer the question Viruses are living organisms.We may consider them regular chemical molecule since they have normal atomic structure, but on the other hand, we must also consider them as being alive since they are able to multiply unlimited quantities Viruses are alive because they
A need warmth
B live
C have a complex atomic structure
D multiply
অ্যালুমিনিয়াম, হিলিয়াম এবং সিলিকনের পারমাণবিক সংখ্যা যথাক্রমে 13, 2 এবং 14 হলে, Al27+He27→Si27+( ) নিউক্লিয়ার বিক্রিয়াতে অনুপস্থিত কণা কোনটি? (Aluminum has atomic number 13, helium has atomic number 2, and silicon has atomic number 14. In the nuclear reaction the missing particle Al27+He27→Si27+( ) is:)
A A. an α particle
B a positron
C an electron
D a proton
. অ্যালুমিনিয়াম, হিলিয়াম এবং সিলিকনের পারমাণবিক সংখ্যা যথাক্রমে 13, 2 এবং 14 হলে, Al27+He27→Si27+ নিউক্লিয়ার বিক্রিয়াতে অনুপস্থিত কণা কোনটি ? (Aluminum has atomic number 13, helium has atomic number 2, and silicon has atomic number 14. In the nuclear reaction Al27+He27→Si27+ the missing particle is:)
A an a particle
B a positrom
C an electron
D a proton
The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element?
A Z
B A
C A+Z
D A-Z
Referring to the periodic table of elements, it is found that with increasing atomic number. The atomic size in the same
A Period increases
B Period decreases
C Group increases
D Both 'B' & 'C'
A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as
A Allotropic change
B Recrystallization
C Heat treatment
D Precipitation
A reversible change in the atomic structure of steel with corresponding change in the properties is known as
A Molecular change
B Physical change
C Allotropic change
D Solidus change
Who developed the model of atomic structure ?
A Bohr and Rutherford
B Volta
C Alfred Nobel
D Faraday
In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material?
A Tin
B Lead
C Zinc
D Glass
The writer says that viruses are alive because they-
A have complex atomic structure
B move
C multiply
D need warmth and light

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