SMART INSTITUTE NMDCAT CHEMISTRY-1 TS
Neon Chemistry Challenge
Test your knowledge of chemistry concepts with our Neon Chemistry Challenge! This quiz is designed for aspiring chemists and students preparing for examinations like the NMDCAT.
With 30 carefully crafted questions covering a wide range of chemistry topics, you will:
- Enhance your understanding of fundamental principles
- Prepare for academic assessments
- Challenge yourself with engaging questions
1-How many electrons have to be removed to ionize 1.0 x 10^-6 moles of Ne atoms to Ne+ ions in a neon advertising tube:
(6.02 x 10^23) / (1.0 x 10^-6)
(1.0 x 10^-6 x 6.02 x 10^23) / (20.2)
1.0 x 10^-6 x 6.02 x 10^23
(1.0 x 10^-6 x 6.02 x 10^23) / (9.65 x 10^-1)
2-Which of the following contains 1 mole of the stated particles?
Chlorine molecules in 35.5 g of chlorine gas
Electrons in 1 g of hydrogen gas
Hydrogen ions in 1 dm^3 of 1 mol dm^3 aqueous sulphuric acid
Oxygen atoms in 22.4 dm^3 of oxygen gas at STP
3-The mass of one molecule of O2 is:
(6.02 x 10^23 )/ 32
32 g
0.32 g
32 / (6.02 x 10^23)
4-Number of molecules of sugar in 1 dm^3 of 1 M sugar solution is :
6.02 x 10^23
3.42 x 6.02 x 10^22
6.02 x 10^20
1.80 x 10^23
5-Artificially occuring isotopes of silver are:
2
16
4
47
6-Valence electron of K has ........... Value for spin quantum number with ........ spin
+1/2 , clockwise
+1/2, anticlockwise
-1/2, clockwise
-1/2, anticlockwise
7-Which of the following quantum number is not mathematically obtained from Shrodinger wave equation:
Principle quantum number
Magnetic quantum number
Azimuthal quantum number
Spin quantum number
8-Correct set of quantum numbers for 5f are:
N=5, l=3, m=+1
N=4, l=3, m=0
N=5, l=2, m=+2
N=5, l=4, m=+1
9-The rule(s) for filling electrons in subshells of atoms is/are:
Aufbau's principle
Hund's rule
Pauli exclusion principle
All of these
10-The place between two orbitals where probability for finding the electron is zero known as:
Anti-orbital
Atomic hole
Nodal plane
None of these
11-Gases deviate from ideal behavior at high pressure . Which of the following is correct for non-ideality?
At high pressure, the gas molecules move in one direction only
At high pressure, the collision between the gas molecules are increased manifold
At high pressure, the volume of the gas becomes insignificant
At high pressure,the inter-molecular attractions become significant
12-Evaporating water depends upon the following:
Surface area and intermolecular forces
Humidity in air
Speed of the air above the liquid surface
All of these
13-Volume of a gas at STP is is 10 dm^3, at what temperature its volume will become 30 dm^3, keeping pressure constant:
3 degree celsius
819 K
819 degree celsius
3 K
14-Absolute Zero is:
-273 K
-459.4 F
0 degree celsius
-546 K
15-In which of the following of the pairs, Debye forces exist:
Water and ethanol
Methane and ethane
Argon and water
Water and Na+
16-A pressure cooker reduces cooking time because:
Large flame is used
Heat is uniformly distributed
Boiling point of water rises
Vapour pressure of liquid decreases
17-Maximum lattice energy is shown by:
LiCl
KCl
NaCl
RbCl
18-C-C bond length in diamond crystal are
1.54 pm
154 pm
109.5 pm
1540 pm
19-The number of chloride ions per unit cell of NaCl are
6
4
2
8
20-Which of the liquid has lowest vapour pressure:
Br2
H2O
CH3OH
C2H5OH
21-Which of the following elements reacts more vigorously with water:
Na
Al
Mg
S
22-The electron affinity of Beryllium is similar to:
He
B
Li
Na
23-Identify the least stable ion amongst the following
Li-
Be-
B-
C-
24-Melting points of group IIA elements are considerably higher than those of group IA elements because
Size of IIA is greater than IA
I.E of IIA is less than IA
I.E of IIA is higher than IA
IIA provide more binding electron
25-Which one of the following has lowest melting point
Be
Ba
Ca
Mg
26-Beryllium and Barium don't form oxide with oxygen:
Normal oxide
Acidic oxide
Basic oxide
Amphoteric oxide
27-Which of the following doesn't react with water even at red hot temperature:
Be
Mg
Ca
Ba
28-Which of the following doesn't react quickly with water at room temperature
K
Mg
Li
Na
29-The reactivity of oxides of alkaline earth metals ...........down to the group.
Increase
Decrease
Unpredictable
Remains constant
30-The first transition series ends on the element
Sc
Ca
Zn
Hg
31-The location of transition elements is in between:
Lanthanides and actinides
Chalcogens and halogens
S and p block elements
D and f block elements
32-Which pair of elements has abnormal electronic configuration:
Ti,V
Cr, Mn
Cr, Cu
Ni, Co
33-Which of the following pairs show resemblance in their valence shell electronic configuration:
Sc, Y, La
Zn, V
Mn, Mo
Pt, Au
34-Group VIB of transition elements contains
Zn, Cd, Hg
Cr, Mo, W
Fe, Ru, Os
Mn, Te, Re
35-The general electronic configuration of 3d series of transition elements is:
Ar (core)(n-1)d^1-10 ns^1-2
Ar (core)(n-1)d^1-2 ns^1-2
Ar (core)(n-1)d^1-10 ns^2
Ar (core)(n-2)d^1-2 ns^12
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