Q. What is the hybridization of the central metal ion in the complex [Cu(NH3)4]2+?
A.
sp
B.
sp2
C.
sp3
D.
dsp2
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Solution
In [Cu(NH3)4]2+, the copper ion undergoes dsp2 hybridization to accommodate four ligands.
Correct Answer:
D
— dsp2
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Q. What is the hybridization of the central metal ion in [Cr(NH3)6]3+? (2020) 2020
A.
sp
B.
sp2
C.
d2sp3
D.
dsp2
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Solution
In [Cr(NH3)6]3+, the hybridization is d2sp3 due to the octahedral arrangement of six ligands.
Correct Answer:
C
— d2sp3
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Q. What is the hybridization of the central metal ion in [Ni(CO)4]?
A.
sp
B.
sp2
C.
sp3
D.
d2sp3
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Solution
In [Ni(CO)4], the nickel ion undergoes sp3 hybridization to accommodate four CO ligands.
Correct Answer:
C
— sp3
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Q. What is the hybridization of the nitrogen atom in a primary amine?
A.
sp
B.
sp2
C.
sp3
D.
sp3d
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Solution
The nitrogen atom in a primary amine is sp3 hybridized.
Correct Answer:
C
— sp3
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Q. What is the hybridization of the nitrogen atom in amines? (2020)
A.
sp
B.
sp2
C.
sp3
D.
sp3d
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Solution
The nitrogen atom in amines is sp3 hybridized, as it forms three sigma bonds and has one lone pair.
Correct Answer:
C
— sp3
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Q. What is the hybridization of the nitrogen atom in an amine?
A.
sp
B.
sp2
C.
sp3
D.
sp3d
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Solution
The nitrogen atom in amines is sp3 hybridized, having a tetrahedral geometry with one lone pair.
Correct Answer:
C
— sp3
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Q. What is the hybridization of the nitrogen atom in NH3?
A.
sp
B.
sp2
C.
sp3
D.
dsp3
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Solution
In NH3, nitrogen has three bonds and one lone pair, leading to sp3 hybridization.
Correct Answer:
C
— sp3
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Q. What is the hybridization of the phosphorus atom in PCl5?
A.
sp
B.
sp2
C.
sp3
D.
d2sp3
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Solution
In PCl5, phosphorus is surrounded by five chlorine atoms, indicating d2sp3 hybridization.
Correct Answer:
D
— d2sp3
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Q. What is the hydrostatic pressure at a depth of 10 meters in water? (Density of water = 1000 kg/m³, g = 9.81 m/s²) (2022)
A.
9810 Pa
B.
10000 Pa
C.
98100 Pa
D.
1000 Pa
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Solution
Hydrostatic pressure is given by P = ρgh. Thus, P = 1000 kg/m³ * 9.81 m/s² * 10 m = 98100 Pa.
Correct Answer:
C
— 98100 Pa
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Q. What is the ideal gas equation?
A.
PV = nRT
B.
PV = nRT^2
C.
PV = nR/T
D.
PV = nRT^3
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Solution
The ideal gas equation is PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.
Correct Answer:
A
— PV = nRT
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Q. What is the idiom that means 'to make a situation worse'?
A.
Add fuel to the fire
B.
Bite the bullet
C.
Break the ice
D.
Hit the nail on the head
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Solution
'Add fuel to the fire' means to make a situation worse.
Correct Answer:
A
— Add fuel to the fire
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Q. What is the image distance for a concave lens with a focal length of -12 cm when the object is placed at 24 cm?
A.
-8 cm
B.
8 cm
C.
-12 cm
D.
12 cm
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Solution
Using the lens formula, 1/f = 1/v - 1/u, we find v = -8 cm.
Correct Answer:
A
— -8 cm
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Q. What is the image distance for a convex lens if the object is placed at 10 cm and the focal length is 5 cm?
A.
-15 cm
B.
15 cm
C.
5 cm
D.
10 cm
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Solution
Using the lens formula 1/f = 1/v - 1/u, we find v = 15 cm.
Correct Answer:
A
— -15 cm
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Q. What is the image distance for a convex lens if the object is placed at 30 cm and the focal length is 10 cm?
A.
15 cm
B.
20 cm
C.
25 cm
D.
30 cm
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Solution
Using the lens formula 1/f = 1/v - 1/u, we find v = 15 cm.
Correct Answer:
B
— 20 cm
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Q. What is the image distance for a convex lens with a focal length of 10 cm when the object is placed 30 cm from the lens?
A.
5 cm
B.
10 cm
C.
15 cm
D.
20 cm
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Solution
Using the lens formula 1/f = 1/v - 1/u, we find v = 20 cm.
Correct Answer:
D
— 20 cm
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Q. What is the image distance for an object placed 30 cm in front of a convex lens with a focal length of 10 cm? (2022)
A.
15 cm
B.
20 cm
C.
25 cm
D.
30 cm
Show solution
Solution
Using the lens formula 1/f = 1/v - 1/u, we have 1/10 = 1/v - 1/(-30). Solving gives v = 15 cm.
Correct Answer:
C
— 25 cm
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Q. What is the impact of cultural diversity on team formation?
A.
It complicates communication
B.
It enhances creativity and innovation
C.
It leads to misunderstandings
D.
It has no significant effect
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Solution
Cultural diversity can enhance creativity and innovation by bringing different perspectives and ideas to the table.
Correct Answer:
B
— It enhances creativity and innovation
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Q. What is the impact of effective conflict resolution in a team?
A.
Increased tension among members
B.
Improved relationships and productivity
C.
Stagnation of ideas
D.
Decreased motivation
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Solution
Effective conflict resolution leads to improved relationships and productivity, as it allows team members to address issues constructively.
Correct Answer:
B
— Improved relationships and productivity
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Q. What is the impact of effective conflict resolution strategies on team performance?
A.
They create more conflicts
B.
They lead to a decrease in team morale
C.
They enhance collaboration and innovation
D.
They are often ignored by team members
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Solution
Effective conflict resolution strategies enhance collaboration and innovation by allowing team members to address issues constructively and maintain a positive working environment.
Correct Answer:
C
— They enhance collaboration and innovation
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Q. What is the impact of effective feedback in a team environment?
A.
It creates tension among members
B.
It fosters a culture of continuous improvement
C.
It leads to misunderstandings
D.
It is often ignored
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Solution
Effective feedback fosters a culture of continuous improvement, helping team members grow and enhance their performance.
Correct Answer:
B
— It fosters a culture of continuous improvement
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Q. What is the impact of team cohesion on performance?
A.
It has no significant effect
B.
It can lead to complacency
C.
It generally enhances performance
D.
It creates competition among members
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Solution
Team cohesion generally enhances performance as it fosters collaboration, trust, and a shared commitment to goals.
Correct Answer:
C
— It generally enhances performance
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Q. What is the impact of trust on team performance?
A.
It has no significant impact
B.
It can lead to complacency
C.
It enhances collaboration and communication
D.
It creates dependency among team members
Show solution
Solution
Trust enhances collaboration and communication within a team, leading to improved performance and a more positive working environment.
Correct Answer:
C
— It enhances collaboration and communication
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Q. What is the impact of using diverse viewpoints in an essay for the UPSC Mains?
A.
It confuses the reader.
B.
It enriches the discussion.
C.
It makes the essay longer.
D.
It is unnecessary.
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Solution
Using diverse viewpoints enriches the discussion by presenting a balanced perspective, which is crucial for analytical essays.
Correct Answer:
B
— It enriches the discussion.
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Q. What is the impedance of a circuit with a resistance of 4 ohms and a reactance of 3 ohms? (2021)
A.
5 ohms
B.
7 ohms
C.
1 ohm
D.
12 ohms
Show solution
Solution
Impedance Z = √(R² + X²) = √(4² + 3²) = √(16 + 9) = √25 = 5 ohms.
Correct Answer:
A
— 5 ohms
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Q. What is the impedance of a circuit with a resistance of 4Ω and a reactance of 3Ω? (2020)
Show solution
Solution
Impedance Z = √(R² + X²) = √(4² + 3²) = √(16 + 9) = √25 = 5Ω.
Correct Answer:
A
— 5Ω
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Q. What is the impedance of a circuit with a resistor of 10Ω and an inductor of 0.1 H at a frequency of 50 Hz? (2022)
A.
10Ω
B.
15.71Ω
C.
20Ω
D.
5Ω
Show solution
Solution
Impedance Z = √(R² + (XL)²), where XL = 2πfL = 31.42Ω. Thus, Z = √(10² + 31.42²) = 15.71Ω.
Correct Answer:
B
— 15.71Ω
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Q. What is the impedance of a circuit with a resistor of 10Ω and an inductor of 0.1H at a frequency of 50Hz? (2022)
A.
10Ω
B.
15.71Ω
C.
20Ω
D.
25Ω
Show solution
Solution
Impedance Z = √(R² + (XL)²), where XL = 2πfL = 31.42Ω. Thus, Z = √(10² + 31.42²) = 15.71Ω.
Correct Answer:
B
— 15.71Ω
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Q. What is the impedance of a circuit with a resistor of 4Ω and a capacitor of 2μF at a frequency of 50Hz? (2020)
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Solution
Impedance Z = √(R² + (1/(ωC))²) where ω = 2πf. Here, R = 4Ω, C = 2μF, f = 50Hz. Calculate Z.
Correct Answer:
C
— 6Ω
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Q. What is the impedance of a circuit with a resistor of 4Ω and an inductor of 3Ω at resonance? (2022)
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Solution
At resonance, the impedance is equal to the resistance, which is 4Ω.
Correct Answer:
C
— 4Ω
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Q. What is the impedance of a series circuit containing a resistor (R) and an inductor (L)?
A.
R
B.
√(R^2 + (ωL)^2)
C.
R + ωL
D.
R - ωL
Show solution
Solution
The impedance Z = √(R^2 + (ωL)^2) in a series R-L circuit.
Correct Answer:
B
— √(R^2 + (ωL)^2)
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