General Knowledge
Q. What is the effect of adding a base to an acidic solution?
A.
Increase in pH
B.
Decrease in pH
C.
No effect
D.
Formation of salt only
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Solution
Adding a base to an acidic solution increases the pH, making it less acidic.
Correct Answer: A — Increase in pH
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Q. What is the electron configuration of a chlorine atom (atomic number 17)? (2020)
A.
1s² 2s² 2p⁶ 3s² 3p⁵
B.
1s² 2s² 2p⁶ 3s² 3p⁶
C.
1s² 2s² 2p⁶ 3s² 3p⁴
D.
1s² 2s² 2p⁶ 3s² 3d⁵
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Solution
The electron configuration of chlorine is 1s² 2s² 2p⁶ 3s² 3p⁵, filling up to the 3p subshell.
Correct Answer: A — 1s² 2s² 2p⁶ 3s² 3p⁵
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Q. What is the electron configuration of an oxygen atom? (2021)
A.
1s² 2s² 2p⁴
B.
1s² 2s² 2p²
C.
1s² 2s² 2p⁶
D.
1s² 2s² 2p³
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Solution
Oxygen has 8 electrons, and its electron configuration is 1s² 2s² 2p⁴.
Correct Answer: A — 1s² 2s² 2p⁴
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Q. What is the equivalent resistance of two resistors of 4 ohms and 6 ohms connected in series?
A.
10 ohms
B.
24 ohms
C.
2.4 ohms
D.
0.67 ohms
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Solution
In series, the equivalent resistance is the sum: R_eq = R1 + R2 = 4 Ω + 6 Ω = 10 Ω.
Correct Answer: A — 10 ohms
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Q. What is the equivalent resistance of two resistors of 4 ohms and 6 ohms in series?
A.
10 ohms
B.
24 ohms
C.
2.4 ohms
D.
0.67 ohms
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Solution
In series, the equivalent resistance is the sum: R_eq = R1 + R2 = 4 Ω + 6 Ω = 10 Ω.
Correct Answer: A — 10 ohms
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Q. What is the focal length of a diverging lens if the image distance is -15 cm and the object distance is -10 cm? (2023)
A.
-30 cm
B.
-20 cm
C.
-15 cm
D.
-10 cm
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Solution
Using the lens formula 1/f = 1/v - 1/u, we find f = -20 cm.
Correct Answer: B — -20 cm
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Q. What is the formula for calculating the capacitance of a parallel plate capacitor?
A.
C = εA/d
B.
C = A/εd
C.
C = d/εA
D.
C = εd/A
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Solution
The capacitance (C) of a parallel plate capacitor is given by C = εA/d, where ε is the permittivity, A is the area of the plates, and d is the distance between them.
Correct Answer: A — C = εA/d
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Q. What is the function of chlorophyll in plants? (2022)
A.
Absorbing water
B.
Absorbing sunlight
C.
Transporting nutrients
D.
Storing energy
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Solution
Chlorophyll is the pigment in plants that absorbs sunlight, which is essential for photosynthesis.
Correct Answer: B — Absorbing sunlight
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Q. What is the function of mitochondria in a cell? (2022)
A.
Photosynthesis
B.
Energy production
C.
Protein synthesis
D.
Cell division
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Solution
Mitochondria are known as the powerhouses of the cell, generating ATP through cellular respiration.
Correct Answer: B — Energy production
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Q. What is the GDP growth rate of India projected for 2023? (2023)
A.
5.5%
B.
6.0%
C.
6.8%
D.
7.5%
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Solution
The GDP growth rate of India is projected to be around 6.8% for 2023.
Correct Answer: C — 6.8%
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Q. What is the highest peak in India?
A.
K2
B.
Kangchenjunga
C.
Nanda Devi
D.
Mount Everest
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Solution
Kangchenjunga is the highest peak in India, standing at 8,586 meters.
Correct Answer: B — Kangchenjunga
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Q. What is the IUPAC name for CH3-CH2-COOH?
A.
Propanoic acid
B.
Butanoic acid
C.
Acetic acid
D.
Methanoic acid
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Solution
The IUPAC name for CH3-CH2-COOH is propanoic acid, as it has three carbon atoms in the longest chain.
Correct Answer: A — Propanoic acid
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Q. What is the latent heat of fusion of ice if 80 g of ice at 0°C melts to water at 0°C, absorbing 2400 J of heat? (2022)
A.
30 J/g
B.
40 J/g
C.
50 J/g
D.
60 J/g
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Solution
Latent heat of fusion (L) = Q/m = 2400 J / 80 g = 30 J/g.
Correct Answer: B — 40 J/g
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Q. What is the least common multiple (LCM) of 4 and 6? (2021)
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Solution
LCM of 4 and 6 is 12.
Correct Answer: A — 12
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Q. What is the length of the median from the vertex opposite the side of length 10 cm in a triangle with sides 10 cm, 10 cm, and 10 cm? (2023)
A.
5 cm
B.
10 cm
C.
8 cm
D.
7 cm
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Solution
In an equilateral triangle, the median is equal to the side length, so it is 10 cm.
Correct Answer: B — 10 cm
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Q. What is the local time at 45°E if it is 12:00 noon at GMT?
A.
3:00 PM
B.
4:00 PM
C.
5:00 PM
D.
6:00 PM
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Solution
45°E corresponds to 45 / 15 = 3 hours ahead of GMT, so it will be 12:00 noon + 3 hours = 3:00 PM.
Correct Answer: B — 4:00 PM
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Q. What is the local time at 90 degrees East longitude when it is 6:00 AM at the Prime Meridian? (2023)
A.
3:00 AM
B.
9:00 AM
C.
12:00 PM
D.
6:00 PM
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Solution
90 degrees East is 6 hours ahead of GMT, so 6:00 AM + 6 hours = 12:00 PM.
Correct Answer: B — 9:00 AM
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Q. What is the magnetic field strength at the center of a circular loop of radius 0.1 m carrying a current of 5 A?
A.
0.1 T
B.
0.2 T
C.
0.5 T
D.
1 T
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Solution
The magnetic field at the center of a circular loop is given by B = (μ₀ * I) / (2 * R). Using μ₀ = 4π x 10^-7 Tm/A, B = (4π x 10^-7 * 5) / (2 * 0.1) = 0.1 T.
Correct Answer: B — 0.2 T
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Q. What is the magnetic field strength at the center of a circular loop of radius r carrying a current I?
A.
μ0I/2r
B.
μ0I/r
C.
μ0I/4r
D.
μ0I/πr
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Solution
The magnetic field at the center of a circular loop is given by B = (μ0I)/(2r).
Correct Answer: B — μ0I/r
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Q. What is the main component of the Earth's mantle? (2019)
A.
Silicate minerals
B.
Iron
C.
Nickel
D.
Water
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Solution
The Earth's mantle is mainly composed of silicate minerals, which include olivine and pyroxene.
Correct Answer: A — Silicate minerals
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Q. What is the main difference between a liquid and a gas?
A.
Shape
B.
Volume
C.
Density
D.
All of the above
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Solution
Liquids have a definite volume and take the shape of their container, while gases have neither a definite shape nor volume.
Correct Answer: D — All of the above
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Q. What is the main factor that determines the climate of a region?
A.
Altitude
B.
Latitude
C.
Longitude
D.
Proximity to water bodies
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Solution
Latitude is the main factor that determines the climate of a region.
Correct Answer: B — Latitude
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Q. What is the main feature of the Atal Pension Yojana? (2015)
A.
To provide loans to farmers
B.
To offer a guaranteed pension to workers in the unorganized sector
C.
To promote digital payments
D.
To enhance women's savings
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Solution
The Atal Pension Yojana offers a guaranteed pension to workers in the unorganized sector, ensuring financial security in old age.
Correct Answer: B — To offer a guaranteed pension to workers in the unorganized sector
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Q. What is the main focus of the Beti Bachao Beti Padhao scheme?
A.
To promote women's entrepreneurship
B.
To improve the sex ratio and promote education for girls
C.
To provide financial aid for women's health
D.
To enhance women's political participation
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Solution
The Beti Bachao Beti Padhao scheme focuses on improving the child sex ratio and promoting education for girls.
Correct Answer: B — To improve the sex ratio and promote education for girls
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Q. What is the main function of dietary fiber in nutrition?
A.
Energy production
B.
Regulating blood sugar
C.
Promoting digestion
D.
Building muscle
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Solution
Dietary fiber promotes digestion by aiding in the movement of food through the digestive tract.
Correct Answer: C — Promoting digestion
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Q. What is the main function of the digestive system?
A.
To provide energy
B.
To absorb nutrients
C.
To circulate blood
D.
To regulate temperature
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Solution
The digestive system breaks down food into nutrients, which are then absorbed into the bloodstream for energy.
Correct Answer: B — To absorb nutrients
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Q. What is the main goal of the Pradhan Mantri Gram Sadak Yojana (PMGSY)? (2000)
A.
To provide electricity to rural areas
B.
To improve road connectivity in rural areas
C.
To enhance internet access in villages
D.
To promote rural tourism
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Solution
The main goal of PMGSY is to improve road connectivity in rural areas, facilitating better access to markets and services.
Correct Answer: B — To improve road connectivity in rural areas
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Q. What is the main goal of the Skill India Mission?
A.
To provide free education
B.
To enhance the skill sets of the youth
C.
To promote entrepreneurship
D.
To ensure food security
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Solution
The Skill India Mission aims to enhance the skill sets of the youth to make them employable and promote entrepreneurship.
Correct Answer: B — To enhance the skill sets of the youth
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Q. What is the main objective of the Pradhan Mantri Awas Yojana (PMAY)? (2016)
A.
To provide free education to all children
B.
To provide affordable housing to the urban poor
C.
To promote digital literacy
D.
To enhance agricultural productivity
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Solution
The Pradhan Mantri Awas Yojana aims to provide affordable housing to the urban poor, ensuring that everyone has access to a home.
Correct Answer: B — To provide affordable housing to the urban poor
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Q. What is the main product of photosynthesis?
A.
Oxygen
B.
Glucose
C.
Carbon dioxide
D.
Water
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Solution
The main product of photosynthesis is glucose, which serves as an energy source for the plant.
Correct Answer: B — Glucose
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