In this post 10th Science Half Yearly 2024 Important One-word collection#1 you can get plenty of one word questions for the standard of 10. I made this 10th Science 2024 Important One-word collection#1 questions for only 10th annual 2025 perspective. These collections of grammar questions are engaging you in a proper way.
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10th Science Half Yearly 2024 Important One-word collection#1
Which is an incorrect statement?
- a) The linear momentum measures the impact of a force on a body
- b) Impulse is equal to the magnitude of change in momentum
- c) Newton’s law of gravitation helps to predict the path of the astronomical bodies
- d) Weight of a body is greater of the polar region and less at the equator
- Answer: d) Weight of a body is greater of the polar region and less at the equator
Kilowatt hour is the unit of
- a) Conductivity
- b) Resistivity
- c) Electrical power
- d) Electrical energy
- Answer: d) Electrical energy
In which of the following reaction, the atomic number decreases by 2 of the daughter nucleus?
- a) Gamma decay
- b) Beta decay
- c) Alpha decay
- d) Neutron decay
- Answer: c) Alpha decay
Magnification of a convex lens is
- a) positive
- b) negative
- c) either positive or negative
- d) zero
- Answer: a) positive
Kilowatt hour is the unit of
- a) resistivity
- b) conductivity
- c) electrical energy
- d) electrical power
- Answer: c) electrical energy
In which of the following, no change in mass number of the daughter nuclei takes place?
- (i) α decay
- (ii) β decay
- (iii) γ decay
- (iv) neutron decay
- a) (i) is correct
- b) (ii) and (iii) are correct
- c) (ii) and (iv) are correct
- d) (i) and (iv) are correct
- Answer: b) (ii) and (iii) are correct
Which group contains the member of halogen family?
- a) 17th
- b) 15th
- c) 18th
- d) 16th
- Answer: a) 17th
The pH of a solution is 3. Its [OH-] hydroxyl concentration is
- a) 1 x 10^-8 M
- b) 3 M
- c) 1 x 10^-11 M
- d) 11 M
- Answer: c) 1 x 10^-11 M
Rectified spirit is an aqueous solution which contains about _______ of ethanol.
- a) 95.5%
- b) 75.5%
- c) 55.5%
- d) 45.5%
- Answer: a) 95.5%
The xylem and phloem arranged side by side on same radius is called _______.
- a) radial
- b) amphivasal
- c) conjoint
- d) none of these
- Answer: c) conjoint
Okazaki fragments are joined together by _______.
- a) Helicase
- b) DNA polymerase
- c) RNA Primer
- d) DNA ligase
- Answer: d) DNA ligase
DNA fingerprinting is based on the principle of identifying _______ sequences of DNA.
- a) Single stranded
- b) Mutated
- c) Polymorphic
- d) Repetitive
- Answer: d) Repetitive
Which one of the following is a protein-rich wheat variety?
- a) Atmota – 2
- b) Rathna
- c) Protina
- d) Atlas 66
- Answer: c) Protina
Cancer of the epithelial cells is called
- a) Leukemia
- b) Sarcoma
- c) Carcinoma
- d) Lipoma
- Answer: c) Carcinoma
Which software is used to create animation?
- a) Paint
- b) PDF
- c) MS Word
- d) Scratch
- Answer: d) Scratch
The correct order of decreasing ionisation energy of the following elements:
- a) Cs > Rb > K > Na > Li
- b) Li > Na > K > Rb > Cs
- c) K > Na > Li > Rb > Cs
- d) Rb > K > Na > Li > Cs
- Answer: c) K > Na > Li > Rb > Cs
The eye defect presbyopia can be corrected by
- a) convex lens
- b) concave lens
- c) convex mirror
- d) bifocal lens
- Answer: d) bifocal lens
SI unit of resistance is
- a) mho
- b) joule
- c) ohm
- d) ohm meter
- Answer: c) ohm
__________ aprons are used to protect us from gamma radiations
- a) Lead oxide
- b) iron
- c) lead
- d) aluminum
- Answer: c) lead
1 mole of any substance contains molecules
- a) 6.023 x 10^23
- b) 6.023 x 10^-23
- c) 3.0115 x 10^23
- d) 12.046 x 10^23
- Answer: a) 6.023 x 10^23
Which of the following is the universal solvent?
- a) Acetone
- b) Benzene
- c) Water
- d) Alcohol
- Answer: c) Water
Which one of the following is used to cure wound?
- a) Hydrochloric acid
- b) Hydrogen peroxide
- c) Ammonium chloride
- d) All the above
- Answer: b) Hydrogen peroxide
__________ is ATP factory of the cells.
- a) Chloroplast
- b) cytoplasm
- c) mitochondria
- d) nucleus
- Answer: c) mitochondria
Water which is absorbed by roots is transported to aerial parts of the plant through
- a) Cytokinin
- b) auxin
- c) gibberellin
- d) ethylene
- Answer: b) auxin
The hormone which has positive effect on apical dominance is
- a) Cytokinin
- b) auxin
- c) gibberellin
- d) ethylene
- Answer: b) auxin
The best way of direct dating fossils of recent origin is by
- a) Radio carbon bond
- b) uranium lead method
- c) potassium argon method
- d) both (a) and (b)
- Answer: a) Radio carbon bond
Excessive consumption of alcohol leads to
- a) Loss of memory
- b) cirrhosis of liver
- c) state of hallucination
- d) suppression of brain function
- Answer: b) cirrhosis of liver
All files are stored in __________
- a) Folder
- b) box
- c) pai
- d) scanner
- Answer: a) Folder
Chemical formula of rust is
- a) FeO.xH₂O
- b) FeO₃.xH₂O
- c) Fe₂O₃.xH₂O
- d) Fe₂O₃
- Answer: c) Fe₂O₃.xH₂O
Solubility of NaCl in 100ml water is 36g. If 25g of salt is dissolved in 100ml of water, how much more salt is required for saturation?
- a) 12g
- b) 11g
- c) 16g
- d) 20g
- Answer: b) 11g
Newton’s III law is applicable
- a) for a body is at rest
- b) both a & b
- c) for a body in motion
- d) only for bodies with equal masses
- Answer: b) both a & b
The value of the universal gas constant
- a) 3.81 J mol-1K-1
- b) 8.31 J mol-1K-1
- c) 1.38 J mol-1K-1
- d) 8.31 J mol-1K-1
- Answer: d) 8.31 J mol-1K-1
Kilowatt hour is the unit of
- a) resistivity
- b) conductivity
- c) electrical energy
- d) electrical power
- Answer: c) electrical energy
Which of the following is a triatomic molecule?
- a) Glucose
- b) Helium
- c) Carbon-di-oxide
- d) Hydrogen
- Answer: c) Carbon-di-oxide
____ is an important metal to form an amalgam.
- a) Ag
- b) Hg
- c) Mg
- d) Al
- Answer: b) Hg
TFM in soaps represents ____ content in soap.
- a) Mineral
- b) Vitamin
- c) fatty acid
- d) Carbohydrate
- Answer: c) fatty acid
The endarch condition is a characteristic feature of ____.
- a) root
- b) stem
- c) leaves
- d) flower
- Answer: b) stem
“Heart of Heart” is called
- a) SA node
- b) AV node
- c) Purkinje fibres
- d) Bundle of His
- Answer: b) SA node
Nerve cells do not possess
- a) Neurilemma
- b) Sarcolemma
- c) axon
- d) dendrites
- Answer: b) Sarcolemma
Syngamy results in the formation of ____
- a) Zoospores
- b) Conidia
- c) Zygote
- d) Chlamydospores
- Answer: c) Zygote
Okazaki fragments are joined together by ____
- a) Helicase
- b) DNA polymerase
- c) RNA primer
- d) DNA Ligase
- Answer: d) DNA Ligase
Impulse is equal to
- a) Rate of force and time
- b) Change of momentum
- c) Rate of change of mass
- d) Rate of change of momentum
- Answer: b) Change of momentum
______ is responsible for the white appearance of the cloud.
- a) Rayleigh scattering
- b) Mie scattering
- c) Tyndall scattering
- d) Raman scattering
- Answer: b) Mie scattering
SI unit of resistance is
- a) mho
- b) joule
- c) ohm
- d) ohm meter
- Answer: c) ohm
The gram molecular mass of oxygen molecule is
- a) 16 g
- b) 17 g
- c) 18 g
- d) 32 g
- Answer: d) 32 g
Which of the following is not the Ore of Aluminium?
- a) Haematite
- b) Bauxite
- c) Cryolite
- d) Corundum
- Answer: a) Hematite
TFM in soaps represents ______ contents in soap.
- a) Mineral
- b) Vitamin
- c) Fatty acid
- d) Carbohydrate
- Answer: c) Fatty acid
Which is formed during anaerobic respiration?
- a) Carbohydrate
- b) Ethyl alcohol
- c) Acetylene
- d) Pyruvate
- Answer: b) Ethyl alcohol
Who is known as the Father of Endocrinology?
- a) W.M. Bayliss
- b) E.H. Starling
- c) Edward C. Kendal
- d) Thomas Addison
- Answer: b) E.H. Starling
The SI unit of electrical resistivity is:
- a) Ω
- b) Ωm^-1
- c) Ωm
- d) Ωm^-2
- Answer: c) Ωm
__________ is used in the treatment of skin diseases:
- a) Radio phosphorous – 32
- b) Radio iron – 59
- c) Radio iodine – 131
- d) Radio sodium – 24
- Answer: c) Radio iodine – 131
Ozone is a __________ molecule:
- a) heterotriatomic
- b) homotriatomic
- c) polyatomic
- d) diatomic
- Answer: b) homotriatomic
Deliquescence is due to:
- a) strong affinity to water
- b) less affinity to water
- c) strong hatred to water
- d) inertness to water
- Answer: a) strong affinity to water
TFM in soaps represents __________ content in soap:
- a) mineral
- b) vitamin
- c) fatty acid
- d) carbohydrate
- Answer: c) fatty acid
The xylem and phloem arranged side by side on the same radius is called:
- a) radial
- b) amphivasal
- c) conjoint
- d) none of these
- Answer: c) conjoint
Which one of the given blood groups is called universal recipient:
- a) A
- b) B
- c) AB
- d) O
- Answer: c) AB
Estrogen is secreted by:
- a) anterior pituitary
- b) primary follicle
- c) Graffian follicle
- d) corpus luteum
- Answer: c) Graffian follicle
Where does alcohol affect immediately after drinking:
- a) eyes
- b) liver
- c) auditory region
- d) central nervous system
- Answer: d) central nervous system
Global warming will cause:
- a) raise in level of oceans
- b) melting of glaciers
- c) sinking of islands
- d) all of these
- Answer: d) all of these
Heart of heart is called
- a) SA node
- b) AV node
- c) Purkinje fibres
- d) Bundle of His
- Answer: a) SA node
The plant which propagates with the help of its leaves is
- a) Onion
- b) Neem
- c) Bryophyllum
- d) Ginger
- Answer: c) Bryophyllum
Palaeontology deals with the study of
- a) Region plants
- b) Fossils
- c) Hormones
- d) Evolution of life
- Answer: b) Fossils
Greenhouse effects
- a) Cultivation of plants
- b) Cooling of earth
- c) Warming of earth
- d) Trapping of UV rays
- Answer: c) Warming of earth
Which software is used to create animation?
- a) Paint
- b) PDF
- c) MS Word
- d) Scratch
- Answer: d) Scratch
The molecular formula of an open chain organic compound is C₄H₈. The class of the compound is
- a) Alkane
- b) Alkyne
- c) Alkene
- d) Alcohol
- Answer: c) Alkene
The essential parts of a flower are
- a) Calyx and corolla
- b) Corolla and gynoecium
- c) Calyx and androecium
- d) Androecium and gynoecium
- Answer: d) Androecium and gynoecium
The body of leech has
- a) 23 segments
- b) 33 segments
- c) 38 segments
- d) 30 segments
- Answer: b) 33 segments
LH is secreted by
- a) Adrenal gland
- b) Thyroid gland
- c) Anterior pituitary
- d) Hypothalamus
- Answer: c) Anterior pituitary
The best way of direct dating fossils of recent origin is by
- a) Radio-carbon method
- b) Potassium-argon method
- c) Uranium lead method
- d) Both (a) and (c)
- Answer: c) Anterior pituitary
Which type of cancer affects lymph nodes and spleen?
- a) Carcinoma
- b) Sarcoma
- c) Leukemia
- d) Lymphoma
- Answer: d) Lymphoma
Inertia of a body depends on:
- a) Weight of the object
- b) Acceleration due to gravity of the planet
- c) Mass of the object
- d) Both a & b
- Answer: c) Mass of the object
If a substance is heated or cooled, the change in mass of the substance is:
- a) Positive
- b) Negative
- c) Zero
- d) None of the above
- Answer: c) Zero
In the nuclear reaction, X → Y, the value of A and Z are:
- a) 8, 6
- b) 8, 4
- c) 4, 8
- d) Cannot be determined with the given data
- Answer: d) Cannot be determined with the given data
Which of the following is a triatomic molecule?
- a) Glucose
- b) Helium
- c) Carbon dioxide
- d) Hydrogen
- Answer: c) Carbon dioxide
Which of the following is hygroscopic in nature?
- a) Ferric chloride
- b) Copper sulfate pentahydrate
- c) Silica gel
- d) None of the above
- Answer: a) Ferric chloride
The general molecular formula of an alkane is:
- a) CnH₂n
- b) CnH₂n-2
- c) CnH₂n+2
- Answer: c) CnH₂n+2
Casparian strips are present in the:
- a) Cortex
- b) Pith
- c) Pericycle
- d) Endodermis
- Answer: d) Endodermis
Heart of the heart is called:
- a) SA node
- b) AV node
- c) Purkinje fibers
- d) Bundle of His
- Answer: a) SA node
Vomiting centre is located in:
- a) Medulla oblongata
- b) Stomach
- c) Cerebrum
- d) Hypothalamus
- Answer: a) Medulla oblongata
Estrogen is secreted by:
- a) Anterior pituitary
- b) Primary follicle
- c) Graafian follicle
- d) Corpus luteum
- Answer: c) Graafian follicle
The use and disuse theory was proposed by:
- a) Charles Darwin
- b) Ernst Haeckel
- c) Lamarck
- d) Gregor Mendel
- Answer: c) Lamarck
Prusakovas is a disease-resistant variety of:
- a) Sugarcane
- b) Rice
- c) Cowpea
- d) Maize
- Answer: c) Cowpea
Half Yearly time table 2024 –Click here.
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10th standard Half Yearly Exam time table 2024:
- 10/12/2024 – Tamil.
- 12/12/2024 – English.
- 16/12/2024 – Maths.
- 19/12/2024 – Science.
- 23/12/2024 – Social Science.
10th standard public 2025 time table:
- 28/03/2025 – Tamil.
- 02//04/2025 – English.
- 07/04/2025 – Maths.
- 11/04/2025 – Science.
- 15/04/2025 – Social Science.
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