Q. In flowering plants, the process of pollination involves the transfer of pollen from the anther to the: (2021)
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A.
Ovary
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B.
Style
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C.
Stigma
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D.
Sepal
Solution
Pollination is the transfer of pollen from the anther to the stigma of a flower, which is essential for fertilization.
Correct Answer: C — Stigma
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Q. In flowering plants, the process of pollination involves the transfer of pollen from the ____ to the ____. (2019)
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A.
Ovary, Stigma
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B.
Anther, Stigma
-
C.
Stigma, Ovary
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D.
Filament, Anther
Solution
Pollination is the transfer of pollen from the anther (male part) to the stigma (female part) of a flower.
Correct Answer: B — Anther, Stigma
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Q. In fluid mechanics, what does the term 'streamline' refer to? (2020)
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A.
Path of a fluid particle
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B.
Layer of fluid
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C.
Viscous flow
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D.
Turbulent flow
Solution
A streamline refers to the path followed by a fluid particle in a steady flow.
Correct Answer: A — Path of a fluid particle
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Q. In how many ways can 3 different colored balls be arranged in a row? (2015)
Solution
The number of arrangements of 3 different colored balls is 3! = 6.
Correct Answer: A — 6
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Q. In how many ways can 3 different fruits be selected from a basket of 7 fruits? (2014)
Solution
The number of ways to select 3 from 7 is C(7, 3) = 35.
Correct Answer: A — 35
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Q. In how many ways can 3 prizes be awarded to 5 students? (2021)
-
A.
60
-
B.
100
-
C.
120
-
D.
80
Solution
The number of ways to award 3 prizes to 5 students is 5P3 = 60.
Correct Answer: C — 120
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Q. In how many ways can 3 prizes be distributed among 5 students? (2021)
-
A.
60
-
B.
100
-
C.
120
-
D.
80
Solution
The number of ways to distribute 3 prizes to 5 students is 5P3 = 60.
Correct Answer: C — 120
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Q. In how many ways can 4 different flags be arranged on a pole? (2015)
Solution
The number of arrangements of 4 distinct flags is 4! = 24.
Correct Answer: A — 24
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Q. In how many ways can 4 different fruits be selected from 10 fruits?
-
A.
210
-
B.
120
-
C.
240
-
D.
300
Solution
The number of ways to choose 4 fruits from 10 is C(10, 4) = 210.
Correct Answer: A — 210
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Q. In how many ways can 4 different prizes be distributed among 10 students? (2023)
-
A.
5040
-
B.
10000
-
C.
2400
-
D.
120
Solution
The number of ways to distribute 4 different prizes among 10 students is 10P4 = 5040.
Correct Answer: A — 5040
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Q. In how many ways can 4 prizes be distributed among 10 students?
-
A.
210
-
B.
5040
-
C.
10000
-
D.
1001
Solution
The number of ways to distribute 4 prizes among 10 students is 10P4 = 5040.
Correct Answer: B — 5040
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Q. In how many ways can 4 students be seated in a row of 6 chairs? (2021)
-
A.
360
-
B.
720
-
C.
120
-
D.
240
Solution
Choose 4 chairs from 6 (6C4) and arrange 4 students (4!). Total = 15 * 24 = 360.
Correct Answer: B — 720
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Q. In how many ways can 5 different books be arranged on a shelf? (2021)
-
A.
60
-
B.
120
-
C.
240
-
D.
720
Solution
The number of arrangements of 5 distinct books is 5! = 120.
Correct Answer: D — 720
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Q. In how many ways can 5 different colored balls be arranged in a line?
-
A.
60
-
B.
120
-
C.
240
-
D.
720
Solution
The number of ways to arrange 5 different colored balls is 5! = 120.
Correct Answer: D — 720
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Q. In how many ways can 5 different fruits be arranged in a row?
Solution
The number of arrangements of 5 different fruits is 5! = 120.
Correct Answer: B — 120
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Q. In how many ways can 5 different letters be arranged if 2 letters are always together? (2019)
Solution
Treat the 2 letters as one unit. So, we have 4 units to arrange: 4! * 2! = 48.
Correct Answer: B — 60
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Q. In how many ways can 6 different colored balls be arranged in a line?
-
A.
720
-
B.
120
-
C.
60
-
D.
30
Solution
The number of arrangements of 6 different colored balls is 6! = 720.
Correct Answer: A — 720
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Q. In how many ways can 6 different colored balls be arranged in a row? (2018)
-
A.
720
-
B.
600
-
C.
480
-
D.
360
Solution
The number of arrangements of 6 distinct balls is 6! = 720.
Correct Answer: A — 720
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Q. In how many ways can 6 people be seated in a row?
-
A.
720
-
B.
600
-
C.
480
-
D.
360
Solution
The number of arrangements of 6 people is 6! = 720.
Correct Answer: A — 720
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Q. In how many ways can 7 people be divided into 3 groups if one group must have 3 people?
-
A.
210
-
B.
300
-
C.
420
-
D.
560
Solution
Choose 3 people from 7: C(7, 3) = 35. The remaining 4 can be divided into 2 groups in 2 ways. Total = 35 * 2 = 70.
Correct Answer: B — 300
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Q. In how many ways can the letters of the word 'BOOK' be arranged? (2022)
Solution
The word 'BOOK' has 4 letters with 'O' repeating. The number of arrangements is 4! / 2! = 12.
Correct Answer: C — 16
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Q. In humans, the allele for brown eyes (B) is dominant over the allele for blue eyes (b). What is the genotype of a person with blue eyes? (2019)
Solution
A person with blue eyes must have the genotype bb, as blue is recessive.
Correct Answer: C — bb
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Q. In measurements, what does the term 'precision' refer to? (2022)
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A.
Closeness to the true value
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B.
Consistency of repeated measurements
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C.
Range of values
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D.
Average of measurements
Solution
Precision refers to the consistency of repeated measurements, regardless of their accuracy.
Correct Answer: B — Consistency of repeated measurements
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Q. In Mendel's experiments, which trait was observed to be dominant in pea plants? (2018)
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A.
Green seed color
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B.
Yellow seed color
-
C.
Wrinkled seeds
-
D.
Short plants
Solution
In Mendel's experiments, yellow seed color was observed to be the dominant trait in pea plants.
Correct Answer: B — Yellow seed color
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Q. In Mendel's experiments, which trait was observed to be dominant over the other? (2018)
-
A.
Green seed color
-
B.
Yellow seed color
-
C.
Round seed shape
-
D.
Wrinkled seed shape
Solution
In Mendel's experiments, yellow seed color was observed to be dominant over green seed color.
Correct Answer: B — Yellow seed color
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Q. In nuclear fission, the mass of the products is less than the mass of the reactants. What is this mass difference called? (2019)
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A.
Nuclear mass
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B.
Binding energy
-
C.
Mass defect
-
D.
Fission energy
Solution
The mass difference in nuclear fission is referred to as the mass defect, which is converted into energy according to Einstein's equation E=mc².
Correct Answer: C — Mass defect
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Q. In nuclear fission, the mass of the products is less than the mass of the reactants. What is this mass difference converted into? (2019)
-
A.
Kinetic energy
-
B.
Potential energy
-
C.
Binding energy
-
D.
Radiation
Solution
The mass difference in nuclear fission is converted into kinetic energy of the fission fragments, according to Einstein's equation E=mc².
Correct Answer: A — Kinetic energy
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Q. In nuclear fission, what is released as a result of the reaction? (2022)
-
A.
Energy and neutrons
-
B.
Only energy
-
C.
Only neutrons
-
D.
Protons and electrons
Solution
Nuclear fission releases a significant amount of energy and additional neutrons, which can induce further fission reactions.
Correct Answer: A — Energy and neutrons
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Q. In nuclear fission, what is released? (2022)
-
A.
Energy and neutrons
-
B.
Only energy
-
C.
Only neutrons
-
D.
Protons and electrons
Solution
Nuclear fission releases a significant amount of energy and additional neutrons, which can induce further fission reactions.
Correct Answer: A — Energy and neutrons
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Q. In plants, which structure is primarily responsible for asexual reproduction? (2023)
-
A.
Roots
-
B.
Leaves
-
C.
Stems
-
D.
Flowers
Solution
Stems, particularly in the form of runners or tubers, are primarily responsible for asexual reproduction in many plants.
Correct Answer: C — Stems
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