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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 quantitative relationship between the substances according to balanced equation describes
Question # 2
The number of moles of CO2which contain 8.0 g of oxygen
Question # 3
The relative abundance of the ions with a definite m/e value is measured by
Question # 4
When nitrogen is 5.6 grams in NO2. then number of moles of NO2is
Question # 5
One mole of ethanol and one mole of ethane have an equal
Question # 6
The number of atoms present in molecule determines its:
Question # 7
Two different hydrocarbon each contain the same percentage by mass of hydrogen. It follows that they have the same
Question # 8
A beaker contains 9 grams of water. The number of H atoms is
Question # 9
The isotopes of an element
Question # 10
A ring contains 3 gram diamond. The number of C-atoms which a ring contains is
Question # 11
Which of the following compounds contains the highest percentage by mass of nitrogen?
Question # 12
The value of R(General Gas Constant) is
Question # 13
Ascorbic acid contains 40.92% carbon, 4.58%, hydrogen and 54.4% oxygen. The empirical formula is
Question # 14
How many moles of oxygen, O2are needed for the complete combustion of two moles of butane C4H10?
Question # 15
The branch of science dealing with structure, composition and changes in matter and laws and principles which govern these changes is called as
Question # 16
One of the following statements is incorrect
Question # 17
Molecules of High molecular weight usually greater than 10,000 are called:
Question # 18
The number of isotopes of gold is
Question # 19
The mass of one mole of proton is
Question # 20
Which statement about an atom is true ?
Question # 21
Objects of the size of an atom can be observed in
Question # 22
Which one of the following statements is not correct
Question # 23
The negatively charged particles are called
Question # 24
Which has greater number of moles
Question # 25
When an electron is added to a uni positive ion we get:
Question # 26
Which of the following statements is not true?
Question # 27
The relative atomic mass of chlorine is 35.5. What is the mass of 2 mol of chlorine gas
Question # 28
Atoms and molecules can either gain or lose electrons, forming charge particles called:
Question # 29
The empirical formula of a liquid compound is known to be C2H4O. What other information is needed to work out its molecular formula?
Question # 30
The amount of products obtained from the balanced chemical equation is regarded as
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 -
Z Zainab Tanvir 07 - Dec - 2025 09 Min 10 Sec 80/120 -
I ISI?Shadow 16 - Nov - 2024 17 Min 47 Sec 80/120 -
N notghouri playz 13 - Dec - 2024 27 Min 04 Sec 80/120 -
T Tayyaba Attique 16 - Nov - 2024 07 Min 22 Sec 75/120 -
U umerasif 14 - Nov - 2024 105 Min 42 Sec 75/120 -
A agha hamza 22 - Nov - 2025 22 Min 17 Sec 72/120 -
A abdullah masood 04 - Dec - 2024 10 Min 54 Sec 70/120 -
M Muhammad Awais 01 - Jan - 2025 05 Min 43 Sec 65/120 -
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A afraz afraz 17 - Jan - 2025 00 Min 39 Sec 60/120 -
D Daniyal Rathore 19 - Nov - 2024 05 Min 49 Sec 60/120
ECAT Chemistry Chapter 1 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | Who one mole of each of the following is completely burned in oxygen, which gives the largest mass of carbon dioxide? |
A. Carbon monoxide
B. Diamond
C. Ethane
D. Methane
|
| 2 | NH3, HCL, H2O, HL are: |
A.
Diatomic molecules
B.
Poly-atomic molecules
C.
Mono-atomic molecules
D.
Hetero atomic molecules |
| 3 | A limiting reactant is one which according to the stoichiometric equation |
A. Has excess mass
B. Has least mass
C. Has excess number of moles
D. Has least number of moles
|
| 4 | 3.01 x 1022Ag+ions is present in |
A. 85 grams AgNO3
B. 0.85 g AgNO3
C. 8.5 g AgNO3
D. 18.5 g AgNO3
|
| 5 | What is the volume in cm3of 3.01 x 1023molecules of O2gas at S.T.P |
A. 1000 cm3
B. 11000 cm3
C. 1120 cm3
D. 11200 cm3
|
| 6 |
|
A. 0 dm3
B. 3 dm3
C. 2 dm3
D. 3 dm3
|
| 7 | Hemoglobin contains nearly: |
A. 10,000 atoms
B. 100 atoms
C. 1000 atoms
D. 1 atom
|
| 8 | In molecules kinetic and potential energies are: |
A. Definite
B. Moderate
C. Indefinite
D. None of above
|
| 9 |
|
A. 300 cm3
B. 200 cm3
C. 150 cm3
D. 100 cm3
|
| 10 | The amount of products obtained from the balanced chemical equation is regarded as |
A. Theoretical yield
B. Actual yield
C. % yield
D. Experimental yield
|
Test Questions