2267 + Mcqs in Science Page 18 McqOptions

851.	A glass sheet is given to you. By which of the following methods, it can be converted into an opaque object without breaking?
A.	Combining another same glass sheet with the given glass sheet.
B.	Covering glass sheet with thin polyethene bag.
C.	Applying black paint on both sides of it.
D.	All the above
E.	None of these
Answer» D. All the above

Discussion

852.	_______eclipse occurs when moon comes between sun and earth.
A.	Lunar
B.	Solar
C.	Partial lunar
D.	Earth
E.	None of these
Answer» C. Partial lunar

Discussion

853.	Sunlight is entering from a window to a dark room, in which a table is placed, A shadow of the table was observed on the wall of the room. Match the following on the basis of above information. Column A Column B (i) Wall [A] Sources of light (ii) Table [B] Formation of a shadow (iii) Sunlight [C] Screen (iv) Process [D] Opaque object
A.	(i-D), (ii-A), (iii-C), (iv-B)
B.	(i-C), (ii-D), (iii-A), (iv-B)
C.	(i-B), (ii-A), (iii-C), (iv-D)
D.	(i-D), (ii-A), (iii-B), (iv-C)
E.	None of these
Answer» C. (i-B), (ii-A), (iii-C), (iv-D)

Discussion

854.	Rahul and Ravi are standing on the opposite sides of a closed door, both of them are able to see each other clearly. Which type of substance is used to make this door?
A.	Transparent
B.	Translucent
C.	Opaque
D.	All the above
E.	None of these
Answer» B. Translucent

Discussion

855.	A burning candle is placed on a table. We can see the light of candle flame when we see it from:
A.	Bent tube \[\to \] by keeping only one eye open.
B.	Straight tube \[\to \] by keeping only one eye open.
C.	Spiral tube \[\to \] by keeping only one eye open.
D.	U-shape tube.
E.	None of these
Answer» C. Spiral tube \[\to \] by keeping only one eye open.

Discussion

856.	Which of the following will produce the darkest shadow if the object is placed in front of a source of light?
A.	Glass window
B.	Butter paper
C.	Net cloth
D.	Wooden block
E.	None of these
Answer» E. None of these

Discussion

857.	Non-luminous objects are objects which:
A.	Produce their own light.
B.	Do not produce its own light.
C.	Can be seen only when light falls on them.
D.	Both [b] and [c]
E.	None of these
Answer» E. None of these

Discussion

858.	On the basis of above figure. Light from which source will form shadow on the screen S?
A.	Light source A
B.	Light source B
C.	Light source C
D.	All the above
E.	None of these
Answer» D. All the above

Discussion

859.	Which one of the following types of energy is required to see any non-luminous object?
A.	Light energy
B.	Heat energy
C.	Sound energy
D.	Wind energy
E.	None of these
Answer» B. Heat energy

Discussion

860.	In a periscope two plane mirrors are fitted at its two ends in such a way that:
A.	They intersect each other.
B.	They are parallel to one another.
C.	They make an angle of \[90{}^\circ \] with each other.
D.	They make an angle of \[30{}^\circ \] with each other.
E.	None of these
Answer» C. They make an angle of \[90{}^\circ \] with each other.

Discussion

861.	In which of the following medium speed of light is maximum?
A.	In air
B.	In vacuum
C.	In glass
D.	In water
E.	None of these
Answer» C. In glass

Discussion

862.	We place an object X in between a reflecting surface and a screen Q, on which an image of X is formed. If a clear image of object X is formed on the screen Q, then which of the following properties is true for object X?
A.	Transparent
B.	Translucent
C.	Opaque
D.	All the above
E.	None of these
Answer» D. All the above

Discussion

863.	Narrow beam of light before reflection in known as:
A.	Reflected ray
B.	Incident ray
C.	Normal ray
D.	Reflection
E.	None of these
Answer» C. Normal ray

Discussion

864.	We can see any object if:
A.	It is a luminous object.
B.	It reflects the light falling on it.
C.	It is placed in a dark room.
D.	Both [a] and [b]
E.	None of these
Answer» E. None of these

Discussion

865.	Images of actors on screen in cinema halls are;
A.	Virtual image
B.	Real images
C.	Imaginary images
D.	All the above
E.	None of these
Answer» B. Real images

Discussion

866.	Which of the following is not a necessary condition for the formation of a shadow?
A.	An opaque object
B.	A screen
C.	A transparent object
D.	A source of light
E.	None of these
Answer» D. A source of light

Discussion

867.	Which of the following is a man-made source of light?
A.	Sun
B.	Meteor
C.	Tube-light
D.	Star
E.	None of these
Answer» D. Star

Discussion

868.	Which of the following is not soluble with water?
A.	Copper sulphate
B.	Alcohol
C.	Wax
D.	Potassium permanganate
E.	None of these
Answer» D. Potassium permanganate

Discussion

869.	Water is known as universal solvent because:
A.	It is colourless.
B.	It dissolves many substances in it.
C.	It is odourless.
D.	It does not dissolve any substance in it.
E.	None of these
Answer» C. It is odourless.

Discussion

870.	The maximum amount of a substance which can be dissolved in 100 grams of water at a given temperature, is known as ____ of that substance.
A.	Solution
B.	Solubility
C.	Availability
D.	Deficiency
E.	None of these
Answer» C. Availability

Discussion

871.	A mixture containing saw-dust and iron nails. Iron-nails can be separated from saw-dust by using:
A.	Filtration method
B.	Distillation method
C.	Magnetic separation
D.	Decantation method
E.	None of these
Answer» D. Decantation method

Discussion

872.	Which of the following is not a kind of filter?
A.	Strainer
B.	Wire-mesh
C.	Glass beaker
D.	Muslin cloth
E.	None of these
Answer» D. Muslin cloth

Discussion

873.	The process which is used to increase the rate of sedimentation by helping the suspended particles to settle down rapidly is called:
A.	Threshing
B.	Loading
C.	Filtration
D.	Winnowing
E.	None of these
Answer» C. Filtration

Discussion

874.	Difference in _____, is utilizes in the process of winnowing for the separation of two solids.
A.	Shape
B.	Size
C.	Weight
D.	Colour
E.	None of these
Answer» D. Colour

Discussion

875.	Which of the following processes is used to separate insoluble impurities?
A.	Evaporation
B.	Distillation
C.	Filtration
D.	Both [a] and [c]
E.	None of these
Answer» E. None of these

Discussion

876.	Which of the following is not a matter?
A.	Water
B.	Heat
C.	Air
D.	Plant
E.	None of these
Answer» C. Air

Discussion

877.	Solubility of most of the solids with the increase in temperature.
A.	Decrease
B.	Increase
C.	Remains the same
D.	Is not affected
E.	None of these
Answer» C. Remains the same

Discussion

878.	After harvesting of crops ____ is separated from grain by winnowing.
A.	Stalk
B.	Chaff
C.	Water
D.	Flour
E.	None of these
Answer» C. Water

Discussion

879.	Few steps are given below to separate salt from sand. Arrange the given steps in a correct sequence. i. Decantation is done. ii. Water is added to the mixture of sand and salt. iii. Stir the mixture of salt, sand and water. iv. Evaporation is done.
A.	i, ii, iii, iv
B.	iii, iv, i, ii
C.	ii, iii, i, iv
D.	ii, i, iv, iii
E.	None of these
Answer» D. ii, i, iv, iii

Discussion

880.	A ______ is used to separate small stones from sand.
A.	Glass
B.	Winnowing fan
C.	Beaker
D.	Sieve
E.	None of these
Answer» E. None of these

Discussion

881.	While rinsing rice in the kitchen with water, before cooking, which process is used generally to separate rice from water?
A.	Decantation
B.	Filtration
C.	Winnowing
D.	Evaporation
E.	None of these
Answer» B. Filtration

Discussion

882.	Petrol and kerosene can be separated by the process of:
A.	Filtration
B.	Winnowing
C.	Sieving
D.	Distillation
E.	None of these
Answer» E. None of these

Discussion

883.	While preparing pulao, Ragini found some husk was mixed with the raw rice. By using which of the following methods she can separate husk from rice?
A.	Threshing
B.	Winnowing
C.	Filtration
D.	Sieving
E.	None of these
Answer» C. Filtration

Discussion

884.	Filtered tea in an example of:
A.	Element
B.	Homogeneous mixture
C.	Heterogeneous mixture
D.	Soluble impurity
E.	None of these
Answer» C. Heterogeneous mixture

Discussion

885.	Which of the following methods is used to separate soluble impurities?
A.	Decantation
B.	Sedimentation
C.	Evaporation
D.	Filtration
E.	None of these
Answer» D. Filtration

Discussion

886.	Which among the following statements is not correct for the separation of substances?
A.	It is used for removing undesirable constituents.
B.	It is used to remove harmful components.
C.	It is used to obtain undesirable constituents.
D.	It is done for obtaining the pure substances.
E.	None of these
Answer» D. It is done for obtaining the pure substances.

Discussion

887.	Which among the following is an element?
A.	Water
B.	Sugar
C.	Hydrogen
D.	Washing soda
E.	None of these
Answer» D. Washing soda

Discussion

888.	Which of the following is not an element?
A.	Oxygen
B.	Zinc
C.	Mercury
D.	Sand
E.	None of these
Answer» E. None of these

Discussion

889.	The difference in the taste of different compounds is because:
A.	They have different colours.
B.	Their molecules are different from each other.
C.	Their molecules are same.
D.	All the above
E.	None of these
Answer» C. Their molecules are same.

Discussion

890.	Which of the following is not a property of wood?
A.	Hardness
B.	Dull appearance
C.	Lustrous
D.	Opaqueness
E.	None of these
Answer» D. Opaqueness

Discussion

891.	The basic unit that makes up all matter.
A.	Substance
B.	Element
C.	Atom
D.	Compound
E.	None of these
Answer» D. Compound

Discussion

892.	Which one among the following materials will not float on the surface of water?
A.	Saw-dust
B.	Ice
C.	Petrol
D.	Silver
E.	None of these
Answer» E. None of these

Discussion

893.	Which of the following is composed of carbon, hydrogen and oxygen?
A.	Water
B.	Washing soda
C.	Vinegar
D.	Common salt
E.	None of these
Answer» D. Common salt

Discussion

894.	Which of the following is not a compound?
A.	Water
B.	Sand
C.	Sodium
D.	Washing soda
E.	None of these
Answer» D. Washing soda

Discussion

895.	A basket containing the following materials: i. Iron sheet ii. Glass tumbler iii. Tissue paper iv. Lens of spectacles Which of the above material is transparent?
A.	i and ii
B.	ii and iv
C.	ii and iii
D.	i and iv
E.	None of these
Answer» C. ii and iii

Discussion

896.	Density of an object refers to:
A.	Product of mass and volume.
B.	Addition of mass and volume.
C.	Mass per unit temperature.
D.	Mass per unit volume.
E.	None of these
Answer» E. None of these

Discussion

897.	Which of the following is essential for performing winnowing?
A.	Soil
B.	Wind
C.	Water
D.	All the above
E.	None of these
Answer» C. Water

Discussion

898.	To describe how much matter is there in something, we use the term:
A.	Weight
B.	Length
C.	Mass
D.	Volume
E.	None of these
Answer» D. Volume

Discussion

899.	Lemon tree belongs to which category?
A.	Herb
B.	Shrub
C.	Tree
D.	Can't say
Answer» C. Tree

Discussion

900.	In a mango tree the branches appear
A.	at the base of stem
B.	higher up on the stem
C.	no where on the stem
D.	None of the above
Answer» C. no where on the stem

Discussion

Explore topic-wise MCQs in 6th Class.

A glass sheet is given to you. By which of the following methods, it can be converted into an opaque object without breaking?

_______eclipse occurs when moon comes between sun and earth.

Rahul and Ravi are standing on the opposite sides of a closed door, both of them are able to see each other clearly. Which type of substance is used to make this door?

A burning candle is placed on a table. We can see the light of candle flame when we see it from:

Which of the following will produce the darkest shadow if the object is placed in front of a source of light?

Non-luminous objects are objects which:

On the basis of above figure. Light from which source will form shadow on the screen S?

Which one of the following types of energy is required to see any non-luminous object?

In a periscope two plane mirrors are fitted at its two ends in such a way that:

In which of the following medium speed of light is maximum?

We place an object X in between a reflecting surface and a screen Q, on which an image of X is formed. If a clear image of object X is formed on the screen Q, then which of the following properties is true for object X?

Narrow beam of light before reflection in known as:

We can see any object if:

Images of actors on screen in cinema halls are;

Which of the following is not a necessary condition for the formation of a shadow?

Which of the following is a man-made source of light?

Which of the following is not soluble with water?

Water is known as universal solvent because:

The maximum amount of a substance which can be dissolved in 100 grams of water at a given temperature, is known as ____ of that substance.

A mixture containing saw-dust and iron nails. Iron-nails can be separated from saw-dust by using:

Which of the following is not a kind of filter?

The process which is used to increase the rate of sedimentation by helping the suspended particles to settle down rapidly is called:

Difference in _____, is utilizes in the process of winnowing for the separation of two solids.

Which of the following processes is used to separate insoluble impurities?

Which of the following is not a matter?

Solubility of most of the solids with the increase in temperature.

After harvesting of crops ____ is separated from grain by winnowing.

Few steps are given below to separate salt from sand. Arrange the given steps in a correct sequence. i. Decantation is done. ii. Water is added to the mixture of sand and salt. iii. Stir the mixture of salt, sand and water. iv. Evaporation is done.

A ______ is used to separate small stones from sand.

While rinsing rice in the kitchen with water, before cooking, which process is used generally to separate rice from water?

Petrol and kerosene can be separated by the process of:

While preparing pulao, Ragini found some husk was mixed with the raw rice. By using which of the following methods she can separate husk from rice?

Filtered tea in an example of:

Which of the following methods is used to separate soluble impurities?

Which among the following statements is not correct for the separation of substances?

Which among the following is an element?

Which of the following is not an element?

The difference in the taste of different compounds is because:

Which of the following is not a property of wood?

The basic unit that makes up all matter.

Which one among the following materials will not float on the surface of water?

Which of the following is composed of carbon, hydrogen and oxygen?

Which of the following is not a compound?

A basket containing the following materials: i. Iron sheet ii. Glass tumbler iii. Tissue paper iv. Lens of spectacles Which of the above material is transparent?

Density of an object refers to:

Which of the following is essential for performing winnowing?

To describe how much matter is there in something, we use the term:

Lemon tree belongs to which category?

In a mango tree the branches appear