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MCQ's Test For ECAT Chemistry Chapter 1 Basic Concepts
Try The MCQ's Test For ECAT Chemistry Chapter 1 Basic Concepts
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Total Questions30
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Time Allowed30
ECAT Chemistry Chapter 1 Basic Concepts
00:00
Question # 1
The phenomenon of isotropy was first discovered by
Question # 2
Isotopes of an element differ in
Question # 3
Relative atomic mass of an element is the mass of the element relative to
Question # 4
If four moles of sulpur dioxide are oxidised to sulphur trioxide, how many moles of oxygen molecules are required
Question # 5
A molecule of haemoglobin is made up if nearly
Question # 6
The value of R(General Gas Constant) is
Question # 7
The mass of sulphur which combines with 24 grams oxygen to form SO2
Question # 8
Metal tend to lose electrons, becoming:
Question # 9
The number of subatomic particles in atoms sidcovered is more than:
Question # 10
The quantitative relationship between the substances according to balanced equation describes
Question # 11
The atomic mass is measured in atomic mass unit (a.m.u.) which is equal to
Question # 12
The amount of products obtained from the balanced chemical equation is regarded as
Question # 13
Atoms and molecules can either gain or lose electrons, forming charge particles called:
Question # 14
A species having positive or negative charge is called:
Question # 15
The largest number of molecules are present in
Question # 16
C6H12O6and C12H22O11 are:
Question # 17
One of the following statements is incorrect
Question # 18
Ascorbic acid contains 40.92% carbon, 4.58%, hydrogen and 54.4% oxygen. The empirical formula is
Question # 19
A balloon contains 0.02 gram of H2gas, it contains H2molecules
Question # 20
CO+ is an example of
Question # 21
A compound X contains 50% sulphur and 50% oxygen by mass. What is the empirical formula of compound X?
Question # 22
Which one of the following compounds does not have the empirical formula CH2O?
Question # 23
Where energy is released during a reaction it is
Question # 24
A compound having empirical formula C3H3O and its molecular mass is 110.02. Its molecular formula is
Question # 25
Al3+is a symbol for aluminium
Question # 26
The atom of an element is
Question # 27
Who one mole of each of the following is completely burned in oxygen, which gives the largest mass of carbon dioxide?
Question # 28
Two different hydrocarbon each contain the same percentage by mass of hydrogen. It follows that they have the same
Question # 29
In molecules kinetic and potential energies are:
Question # 30
Macromolecules are
Top Scorers Of ECAT Chemistry Chapter 1 Basic Concepts MCQ`s Test
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F Fatima Tabassum 09 - Jan - 2025 04 Min 47 Sec 100/120 -
Z zakee 09u 28 - Nov - 2024 18 Min 56 Sec 95/120 -
H habib rehman 17 - Apr - 2026 24 Min 01 Sec 92/120 -
A Aroosha Tariq 13 - Nov - 2024 06 Min 02 Sec 90/120 -
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S shahmeer Ch 17 - Jun - 2026 08 Min 55 Sec 64/120
ECAT Chemistry Chapter 1 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 |
Hemoglobin is 68000 times heavier than: |
A. Oxygen atom
B. Nitrogen atom
C. Carbon atom
D. Hydrogen atom
|
| 2 | The value of R(General Gas Constant) is |
A.
8.3134 JK-1mole-1
B.
1.987 Cal K-1Mole-1
C. Both a and b
D.
1.987 JK-1mole-1 |
| 3 |
Metal tend to lose electrons, becoming: |
A.
Metals
B.
Positively charged
C.
Negatively charged
D.
(a)And (c) |
| 4 | A balloon contains 0.02 gram of H2gas, it contains H2molecules |
A. 6.02 x 1023
B. 3.01 x 1022
C. 6.02 x 1021
D. 3.01 x 1021
|
| 5 |
|
A. 0 dm3
B. 3 dm3
C. 2 dm3
D. 3 dm3
|
| 6 | A species having positive or negative charge is called: |
A. Electron
B. Ion
C. Proton
D. Atom
|
| 7 | Benzene is stable to: |
A. Oxidation
B. Nitration
C. KMnO4
D. SULPHONATION
|
| 8 | CL2, N2 and O2 are: |
A.
Diatomic molecules
B.
Hetero atomic molecules
C.
Poly-atomic molecules
D. Mono-atomic molecules
|
| 9 | The mass of one mole of proton is |
A. 1.008 g
B. 0.184 g
C. 1.673 g
D. 1.008 mg
|
| 10 | Where energy is released during a reaction it is |
A. Exothermic reaction
B. Endothermic reaction
C. A free radical reaction
D. A bond breaking reaction
|
Test Questions
Share your comments & questions here
ishaq
05 Mar 2019where is the syllabus or preparation material
ishaq
05 Mar 2019...
Mehwish
30 Jun 2018...