Here are some important 1 mark questions for SSC / Tenth / 10th Class
Public Exams in AP and Telangana. The questions are given from
Physical Sciences subject for English medium students.
Q: Why does our image appear thin or bulged out in some mirrors?
A: When the mirror is not a plane mirror and if it is a spherical
mirror then our image appears like that.
Q: Are the angle of reflection and angle of incidence also equal for
reflection at curved surfaces?
A: Even for reflection by curved surfaces, the angle of incidence will
be equal to the angle of reflection.
Q: Can we at least heat up a vessel using a mirror?
A: We know that a concave mirror focuses parallel sun rays at its
focal point. So with a small concave mirror we can heat up and burn
paper by putting it at its focus and allowing the sun rays to fall on
it. If a vessel is placed instead of paper it gets heated.
Q: What happens if the size of the hole of a pin hole camera is much
bigger or equal to the size of the flame used as an object?
A: The pin hole camera cannot produce the image of the flame on its
screen as the hole is of the size of the flame.
On the screen we can observe some bright region formed due to the
light intensity of the flame.
Q: Why pure acetic acid does not turn blue litmus to red?
A: Acetic acid is a weak acid. Further it is a hydrocarbon. As such it
does not turn blue litmus to red.
Q: Is the substance present in antacid tablet acidic or basic?
A: Sodium hydrogen carbonate is one of the substances present in
antacid tablet. This substance is an alkali.
Q: Write the names of two synthetic indicators?
A: 1) Methyl orange
2) Phenophthalein are two synthetic indicators.
Q: What is the chemical name for table salt?
A: NaCl: (Sodium chloride) is the chemical name for table salt.
Q: What is galvanizing? How is it useful?
A: Galvanizing is a method of protecting iron from rusting by coating
them a thin layer of Zinc.
10th Class Physical Sciences Imp 2 Marks Questions for AP and Telangana Boards
Here are important 2 marks questions for 10th Class / SSC public exams
in Telangana and AP. The questions are from Physical Sciences subject
for English medium students.
Q: Why does we get dew on the surface of cold soft drink bottle kept
in open air?
A: It is because of condensation of water molecules in the air on the
surface of cold drink bottle. When the water molecules in air, during
their motion strike the surface of cold soft drink bottle, they loose
their kinetic energy. When the water molecules loose their energy
their temperature falls down and so they condense as water droplets on
the surface of the bottle.
Q: What is baking powder? How does it make the cake soft and spongy?
A: Baking powder is a mixture of baking soda and tartaric acid.
When baking powder is heated it releases CO2 gas due to which the cake
rises and becomes soft and spongy.
Q: Why is the angle of reflection equal to the angle of incidence when
a light ray gets reflected from a surface?
A: Light selects a path which takes least time to travel.
This principle was first given by Fermat an amateur mathematician. It
is also applicable to reflection of light. When light gets reflected
from a surface, it selects the path that takes the least time. This is
why the angle of incidence is equal to the angle of reflection.
Q: What do you mean by corrosion? How do you prevent it?
A: Corrosion: When some metals are exposed to moisture, acids etc,
they tarnish due to the formation of respective metal oxide on their
surface. This process is called corrosion.
Corrosion can be prevented or at least minimised by shielding the
metal surface from oxygen and moisture. It can be prevented by
painting, oiling, greasing, galvanizing, chrome plating or making
alloys.
Q: Equal amounts of water are kept in a cup and a dish. Which will
evaporate faster? Why?
A: Water in the dish evaporates faster than that in the cup. The rate
of evaporation of a liquid depends upon its surface area exposed. As
more surface of water in a dish is exposed than in a cup, water
evaporates faster in the dish.
Q: Why does transfer of heat energy take place between objects? (1 Mark)
A: When two objects are placed in thermal contact, heat energy will be
transferred from the hotter body to the 'colder body'.
Transfer of heat energy take place between two objects due to
temperature difference in the objects.
in Telangana and AP. The questions are from Physical Sciences subject
for English medium students.
Q: Why does we get dew on the surface of cold soft drink bottle kept
in open air?
A: It is because of condensation of water molecules in the air on the
surface of cold drink bottle. When the water molecules in air, during
their motion strike the surface of cold soft drink bottle, they loose
their kinetic energy. When the water molecules loose their energy
their temperature falls down and so they condense as water droplets on
the surface of the bottle.
Q: What is baking powder? How does it make the cake soft and spongy?
A: Baking powder is a mixture of baking soda and tartaric acid.
When baking powder is heated it releases CO2 gas due to which the cake
rises and becomes soft and spongy.
Q: Why is the angle of reflection equal to the angle of incidence when
a light ray gets reflected from a surface?
A: Light selects a path which takes least time to travel.
This principle was first given by Fermat an amateur mathematician. It
is also applicable to reflection of light. When light gets reflected
from a surface, it selects the path that takes the least time. This is
why the angle of incidence is equal to the angle of reflection.
Q: What do you mean by corrosion? How do you prevent it?
A: Corrosion: When some metals are exposed to moisture, acids etc,
they tarnish due to the formation of respective metal oxide on their
surface. This process is called corrosion.
Corrosion can be prevented or at least minimised by shielding the
metal surface from oxygen and moisture. It can be prevented by
painting, oiling, greasing, galvanizing, chrome plating or making
alloys.
Q: Equal amounts of water are kept in a cup and a dish. Which will
evaporate faster? Why?
A: Water in the dish evaporates faster than that in the cup. The rate
of evaporation of a liquid depends upon its surface area exposed. As
more surface of water in a dish is exposed than in a cup, water
evaporates faster in the dish.
Q: Why does transfer of heat energy take place between objects? (1 Mark)
A: When two objects are placed in thermal contact, heat energy will be
transferred from the hotter body to the 'colder body'.
Transfer of heat energy take place between two objects due to
temperature difference in the objects.
Senior Inter Botany Imp Questions and Answers - Respiration in Plants
Following are important 4 marks questions for IPE exams from Senior
Inter Botany subject. The questions are useful for AP and Telangana
Intermediate students. The questions and answers are from Respiration
in Plants chapter.
Q: Explain various complexes involved in Electron Transport System of
respiration.
A: ETS involves 5 complexes.
1. Complex I = NADH dehydrogenase
2. Complex II = Succinic dehydrogenase
3. Complex III = Cytochrome C reductase
4. Complex IV = Cytochrome C oxidase
5. Complex V = ATP synthase
These are all present in inner membrane of mitochondrion.
Complex I receives e− from Mitochondrial NADH2 and conveys it to
complex III through UQ.
Complex II receives e− from FADH2 and conveys it to complex through UQ.
Complex III gives e− to complex IV through cyt C.
Complex IV gives e− to oxygen.
Complex V forms ATP by oxidative phosphorylation.
Q: Describe the structure of complex V and explain the process of
oxidative phosphorylation as explained by chemiosmotic hypothesis.
A: Complex V is chemically a proteinaceous enzyme called ATP synthase.
It has two parts. 1) F0, 2) F1. The enzyme is present in
the inner membrane of mitochondria. F0 is present towards
perimitochondrial space and F1 is protruded into the matrix.
F0 forms proton channel. Protons pass through F0 and fall into F1. It
is the head piece and rotates always. It is the site of protein
synthesis. Peter mitchel proposed chemi osmotic model. According
concentration gradient, H+ from perimitochondrial space pass through
F0 into F1. For every
3H+, 1 ATP is produced.
Q: What is the common pathway for aerobic and anaerobic respirations?
Where does it take place? (2 Marks)
A: The common pathway for aerobic and anaerobic respirations. It
occurs in cytosol where all the enzymes (10) required for it are
present.
Inter Botany subject. The questions are useful for AP and Telangana
Intermediate students. The questions and answers are from Respiration
in Plants chapter.
Q: Explain various complexes involved in Electron Transport System of
respiration.
A: ETS involves 5 complexes.
1. Complex I = NADH dehydrogenase
2. Complex II = Succinic dehydrogenase
3. Complex III = Cytochrome C reductase
4. Complex IV = Cytochrome C oxidase
5. Complex V = ATP synthase
These are all present in inner membrane of mitochondrion.
Complex I receives e− from Mitochondrial NADH2 and conveys it to
complex III through UQ.
Complex II receives e− from FADH2 and conveys it to complex through UQ.
Complex III gives e− to complex IV through cyt C.
Complex IV gives e− to oxygen.
Complex V forms ATP by oxidative phosphorylation.
Q: Describe the structure of complex V and explain the process of
oxidative phosphorylation as explained by chemiosmotic hypothesis.
A: Complex V is chemically a proteinaceous enzyme called ATP synthase.
It has two parts. 1) F0, 2) F1. The enzyme is present in
the inner membrane of mitochondria. F0 is present towards
perimitochondrial space and F1 is protruded into the matrix.
F0 forms proton channel. Protons pass through F0 and fall into F1. It
is the head piece and rotates always. It is the site of protein
synthesis. Peter mitchel proposed chemi osmotic model. According
concentration gradient, H+ from perimitochondrial space pass through
F0 into F1. For every
3H+, 1 ATP is produced.
Q: What is the common pathway for aerobic and anaerobic respirations?
Where does it take place? (2 Marks)
A: The common pathway for aerobic and anaerobic respirations. It
occurs in cytosol where all the enzymes (10) required for it are
present.
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