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Science Write True or False

[ Question Bank ] - 2022 · Maharashtra Board STD 10 (MSBSHSE - English Medium). 89 questions.

Questions

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89 questions · self-marked practice — reveal the answer and mark yourself.

Question 31 Mark
Vision defect that increases distance between the lens of the eye and retina of the eye is termed as myopia.

  • Right

  • Wrong

Answer
Vision defect that increases distance between the lens of the eye and retina of the eye is termed as myopia- Right
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Question 41 Mark
Humidity relative to dew point temperature is 100%.

  • Right

  • Wrong

Answer
Humidity relative to dew point temperature is 100%- Right
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Question 51 Mark
Nanometer unit is used to measure atomic radius.

  • Right

  • Wrong

Answer
Nanometer unit is used to measure atomic radius- Wrong
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Question 61 Mark
There are different general molecular formula for all members of the homologous series.

  • Right

  • Wrong

Answer
There are different general molecular formula for all members of the homologous series- Wrong
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Question 81 Mark
For a healthy human eye, the distant point is infinite distance.

  • Right

  • Wrong

Answer
For a healthy human eye, the distant point is infinite distance- Right
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Question 91 Mark
All metals have the same specific heat capacity.

  • Right

  • Wrong

Answer
All metals have the same specific heat capacity- Wrong
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Question 101 Mark
The valency of the elements in group 2 is 1.

  • Right

  • Wrong

Answer
The valency of the elements in group 2 is 1- Wrong
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Question 121 Mark
As one ascends in any homologous series, physical properties change gradually.

  • Right

  • Wrong

Answer
As one ascends in any homologous series, physical properties change gradually- Right
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Question 131 Mark
The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point.

  • Right

  • Wrong

Answer
The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point- Wrong
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Question 141 Mark
The lens of the eye is flattened when looking at nearby objects.

  • Right

  • Wrong

Answer
The lens of the eye is flattened when looking at nearby objects- Wrong
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Question 151 Mark
Calorimeters are used to measure specific heat capacity.

  • Right

  • Wrong

Answer
Calorimeters are used to measure specific heat capacity- Right
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Question 161 Mark
To the left of the zig-zag line in the periodic table are the metal elements.

  • Right

  • Wrong

Answer
To the left of the zig-zag line in the periodic table are the metal elements- Right
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Question 171 Mark
Free fall of an object does not depend on the mass of the object.
  • Right
  • Wrong
Answer
Free fall of an object does not depend on the mass of the object- Right
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Question 181 Mark
Cyclohexane is a branched chain type of hydrocarbon.

  • Right

  • Wrong

Answer
Cyclohexane is a branched chain type of hydrocarbon- Wrong
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Question 191 Mark
In the electrolytic reduction of alumina, the lining of graphite acts as an anode.

  • Right

  • Wrong

Answer
In the electrolytic reduction of alumina, the lining of graphite acts as an anode- Wrong
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Question 201 Mark
The power of the magnifying glass depends on the distance of the magnifying glass from object.

  • True

  • Wrong

Answer
The power of the magnifying glass depends on the distance of the magnifying glass from object- Wrong
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Question 211 Mark
1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour.

  • Right

  • Wrong

Answer
1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour- Right
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Question 221 Mark
Electric motors are devices that convert electrical energy into mechanical energy.

  • Right

  • Wrong

Answer
Electric motors are devices that convert electrical energy into mechanical energy- Right
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Question 241 Mark
As we go above the earth's surface, value of g increases.
  • Right
  • Wrong
Answer
As we go above the earth's surface, value of g increases- Wrong
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Question 251 Mark
Benzene is a cyclic unsaturated hydrocarbon.

  • Right

  • Wrong

Answer
Benzene is a cyclic unsaturated hydrocarbon- Right
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Question 261 Mark
In the electrolytic method, a layer of highly active metal is applied to a less active metal.

  • Right

  • Wrong

Answer
In the electrolytic method, a layer of highly active metal is applied to a less active metal- Wrong
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Question 271 Mark
The image of an object at an infinite distance is obtained in a real and erect form through a convex magnifying glass.

  • Right

  • Wrong

Answer
The image of an object at an infinite distance is obtained in a real and erect form through a convex magnifying glass- Wrong
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Question 281 Mark
During reheating, ice is converted to water at a temperature of 0 °C.

  • Right

  • Wrong

Answer
During reheating, ice is converted to water at a temperature of 0 °C- Right
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Question 291 Mark
The frequency of the alternating current is 50 Hz.

  • Right

  • Wrong

Answer
The frequency of the alternating current is 50 Hz- Right
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Question 301 Mark
The modern periodic table shows the molecular masses of the elements in each frame.

  • Right

  • Wrong

Answer
The modern periodic table shows the molecular masses of the elements in each frame- Wrong
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Question 311 Mark
The value of G varies from place to place.
  • Right
  • Wrong
Answer
The value of G varies from place to place- Wrong
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Question 321 Mark
In general, saturated compounds are more reactive than unsaturated compounds.

  • Right

  • Wrong

Answer
In general, saturated compounds are more reactive than unsaturated compounds- Wrong
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Question 331 Mark
Mercury, silver, gold are highly reactive metals.

  • Right

  • Wrong

Answer
Mercury, silver, gold are highly reactive metals- Wrong
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Question 341 Mark
When the incident ray is parallel to the principal axis, the refracted ray passes through the principal focus.

  • Right

  • Wrong

Answer
When the incident ray is parallel to the principal axis, the refracted ray passes through the principal focus- Right
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Question 351 Mark
Calorimeters are used to study anomalous behaviour of water.

  • Right

  • Wrong

Answer
Calorimeters are used to study anomalous behaviour of water- Wrong
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Question 361 Mark
Galvanometers are used for electrical measurements.

  • Right

  • Wrong

Answer
Galvanometers are used for electrical measurements- Right
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Question 371 Mark
The modern periodic table has 1 to 7 periods.

  • Right

  • Wrong

Answer
The modern periodic table has 1 to 7 periods- Right
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Question 381 Mark
The value of g is highest at the equator.
  • Right
  • Wrong
Answer
The value of g is highest at the equator- Wrong
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Question 391 Mark
Carbon compounds contain only open chains of carbon atoms.

  • Right

  • Wrong

Answer
Carbon compounds contain only open chains of carbon atoms- Wrong
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Question 401 Mark
In solid state, ionic compounds conduct electricity.

  • Right

  • Wrong

Answer
In solid state, ionic compounds conduct electricity- Wrong
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Question 411 Mark
Hypermetropia can be corrected using concave lens of proper focal length.

  • Right

  • Wrong

Answer
Hypermetropia can be corrected using concave lens of proper focal length- Wrong
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Question 421 Mark
The speed of light varies in different media.

  • Right

  • Wrong

Answer
The speed of light varies in different media- Right
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Question 431 Mark
The latent heat of vaporisation is a term referred for the conversion of gas into liquid.

  • Right

  • Wrong

Answer
The latent heat of vaporisation is a term referred for the conversion of gas into liquid- Wrong
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Question 441 Mark
Increasing the current passing through the wire decreases the magnetic field intensity.

  • Right

  • Wrong

Answer
Increasing the current passing through the wire decreases the magnetic field intensity- Wrong
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Question 451 Mark
While designing the periodic table, Mendeleev considered the chemical and physical properties of the elements.

  • Right

  • Wrong

Answer
While designing the periodic table, Mendeleev considered the chemical and physical properties of the elements- Right
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Question 461 Mark
The function of a satellite launcher is based on Newton's second law of motion.

  • Right

  • Wrong

Answer
The function of a satellite launcher is based on Newton's second law of motion- Wrong
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Question 471 Mark
The value of gravitational acceleration at the centre of earth is zero.
  • Right
  • Wrong
Answer
The value of gravitational acceleration at the centre of earth is zero- Right
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Question 501 Mark
The image of the object in the human eye is formed on the cross screen.

  • Right

  • Wrong

Answer
The image of the object in the human eye is formed on the cross screen- Wrong
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Question 521 Mark
The specific heat capacity of water is 1 cal/g °C.

  • Right

  • Wrong

Answer
The specific heat capacity of water is 1 cal/g °C- Right
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Question 531 Mark
Live wire and neutral wires have a 220 V potential difference.

  • Right

  • Wrong

Answer
Live wire and neutral wires have a 220 V potential difference- Right
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Question 541 Mark
In Dobreiner's triads, three elements appear to be arranged in ascending order of their atomic number.

  • Right

  • Wrong

Answer
This statement is wrong.
Explanation:
Dobreiner's triads, three elements appear to be arranged in ascending order of their atomic masses.
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Question 551 Mark
India is the first country to discover the existence of water on the moon.

  • Right

  • Wrong

Answer
India is the first country to discover the existence of water on the moon- Right
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Question 561 Mark
The $CGS$ unit of $G$ is dyne.$cm^2/g^2$.
  • Right
  • Wrong
Answer
The $CGS$ unit of $G$ is dyne.$cm^2/g^2$- Right
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Question 571 Mark
Electronegativity is the metallic property of an element.

  • Right

  • Wrong

Answer
Electronegativity is the metallic property of an element- Wrong
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Question 581 Mark
The number of electrons in the valence shell of a carbon atom is 4.

  • Right

  • Wrong

Answer
The number of electrons in the valence shell of a carbon atom is 4- Right
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Question 591 Mark
Electrolysis is used to obtain pure metal from impure metal.

  • Right

  • Wrong

Answer
Electrolysis is used to obtain pure metal from impure metal- Right
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Question 601 Mark
Convex magnifying glass is called divergent magnifying glass and concave magnifying glass is called converging magnifying glass.

  • Right

  • Wrong

Answer
Convex magnifying glass is called divergent magnifying glass and concave magnifying glass is called converging magnifying glass- Wrong
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Question 611 Mark
The incident rays and refracting rays are on opposite sides of the normal.

  • Right

  • Wrong

Answer
The incident rays and refracting rays are on opposite sides of the normal- Right
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Question 621 Mark
The dew point temperature does not depend on the amount of vapor in the air.

  • Right

  • Wrong

Answer
The dew point temperature does not depend on the amount of vapor in the air- Wrong
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Question 631 Mark
The alternating current is an oscillatory current.

  • Right

  • Wrong

Answer
The alternating current is an oscillatory current- Right
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Question 641 Mark
If edible oil is left aside for a long time, it will get rancid.

  • Right

  • Wrong

Answer
If edible oil is left aside for a long time, it will get rancid- Right
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Question 651 Mark
The similarity between the properties of the first and eighth elements is called the octave rule.

  • Right

  • Wrong

Answer
The similarity between the properties of the first and eighth elements is called the octave rule- Right
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Question 661 Mark
The escape velocity on the moon is less than that on the earth.

  • Right

  • Wrong

Answer
The escape velocity on the moon is less than that on the earth- Right
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Question 671 Mark
If the distance between two masses is doubled, the gravitational force between them becomes less than the previous force.
- right
-wrong
Answer
If the distance between two masses is doubled, the gravitational force between them becomes less than the previous force- Right
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Question 681 Mark
On moving down the group metallic character increases.

  • Right

  • Wrong

Answer
On moving down the group metallic character increases- Right
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Question 701 Mark
The size of an atom depends on the number of valence electrons.

  • Right

  • Wrong

Answer
The size of an atom depends on the number of valence electrons- Wrong
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Question 711 Mark
The metallic character of the element decreases moving across a period from left to the right.

  • Right

  • Wrong

Answer
The metallic character of the element decreases moving across a period from left to the right- Right
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Question 731 Mark
The number of shells decreases in a group from top to bottom.

  • Right

  • Wrong

Answer
The number of shells decreases in a group from top to bottom- Wrong
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Question 751 Mark
The K and L shells of the elements Na and Mg contain electrons.

  • Right

  • Wrong

Answer
The K and L shells of the elements Na and Mg contain electrons- Right
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Question 761 Mark
Ethanol is soluble in water in all proportions.

  • Right

  • Wrong

Answer
Ethanol is soluble in water in all proportions- Right
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Question 771 Mark
Beryllium and calcium are alkaline earth metals.

  • Right

  • Wrong

Answer
Beryllium and calcium are alkaline earth metals- Right
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Question 781 Mark
Colorless ethanol is in liquid state at room temperature.

  • Right

  • Wrong

Answer
Colorless ethanol is in liquid state at room temperature- Right
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Question 791 Mark
Bauxite reacts with sodium hydroxide in the Bayer’s process.

  • Right

  • Wrong

Answer
Bauxite reacts with sodium hydroxide in the Bayer’s process- Right
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Question 801 Mark
The elements lithium and beryllium are in the same period because their valencies are similar.

  • Right

  • Wrong

Answer
The elements lithium and beryllium are in the same period because their valencies are similar- Wrong
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Question 811 Mark
Potassium permanganate is an oxidizing compound in regular use.

  • Right

  • Wrong

Answer
Potassium permanganate is an oxidizing compound in regular use- Right
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Question 841 Mark
All the elements in the halogen family are gases.

  • Right

  • Wrong

Answer
All the elements in the halogen family are gases- Wrong
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Question 851 Mark
Substances that can give oxygen to other substances are called reductant.

  • Right

  • Wrong

Answer
Substances that can give oxygen to other substances are called reductant- Wrong
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Question 871 Mark
The virtual image of object seen by the eye depends on the angle subtended by the object with the eye.

  • Right

  • Wrong

Answer
The virtual image of object seen by the eye depends on the angle subtended by the object with the eye- Right
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Question 881 Mark
The unit of absolute humidity is $kg/m^3$.
  • Right
  • Wrong
Answer
The unit of absolute humidity is $kg/m^3$- Right
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Question 891 Mark
Moving from left to right, the size of the atom decreases.

  • Right

  • Wrong

Answer
Moving from left to right, the size of the atom decreases- Right
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