Basic Concepts 1

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A test from chapter 1 i.e Basic Concepts of Chemistry part 1. This is Free online test for FSc and Entry test Preparation for UET, NUST, FAST, GIKI, PIEAS, NFC, Punjab University, UHS, other Engineering Universities and Medical Colleges.

1. Haemoglobin is heavier than a hydrogen atom

A) 65,000
B) 68,000
C) 62,000
D) 60,000

2. Molecule of haemoglobin contains atoms

A) 15,000
B) 12,000
C) 10,000
D) 8,000

3. Number of gram atoms in 0.1 gm of Na is

A) 0.0043
B) 0.0403
C) 0.403
D) None of these

4. The pressure of vapours in the separating isotopes by mass spectrometry is kept at

A) 10^6 torr
B) 10^4 torr
C) 10^3 torr
D) 10^5 torr

5. Cadmium has isotopes

A) 3
B) 5
C) 7
D) 9

6. Nickel has isotopes

A) 1
B) 3
C) 5
D) 7

7. 1 atomic masses unit (amu) is equation

A) 1.66 x 10^27 kg
B) 1.56 x 10^27 kg
C) 1.76 x 10^21 kg
D) 1.8 x 10^27 kg

8. An ordinary misoscope is used to measure the object of size

A) upto 500 nm
B) upto 850 nm
C) upto 1000 nm
D) upto 1200 nm

9. A molecule having two atoms is called

A) monoatomic molecules
B) diatomic molecules
C) Polyatomic molecules
D) homoatomic molecule

10. Isotopes when even atomic masses are a comparatively abundant

A) demper’s spectrograph is superior to that of Aston’s
B) 0.1 mg of H2O has greater number of molecules then 0.1 mg of CH4
C) the number of H+ and PO–3 ions are not equal but the number of positive and negative charges
D) are equal when 100 molecules of H3PO4 are thrown in excess of water