Questions :-
1.Nucleus contain thread-like structures is called ___________
(a) Chromosomes
(b) Vacuoles
(c) Plastids
(d) None of these
2.The membrane of the vacuole is called ___________
(a) Plastids
(b) Vacuoles
(c) Tonoplast
(d) Chloroplast
3.Plastids that contain green colour pigment are called __________
(a) Chlorophyll
(b) Chloroplast
(c) Tonoplast
(d) Protoplast
4. __________ are present only in plant cell.
(a) Plastids
...
Questions :-
1. What are the basic structural units and the building blocks of all living organism.
(a) Tissue
(b) Cell
(c) Organ
(d) None of these
2.Cell was discovered by ____________
(a) Robert brown
(b) Stuart hooke
(c) Robert hooke
(d) None of these
3.Name the organisms which are made up of single cell.
(a) Unicellular organisms
(b) Multicellular organisms
(c) Both of these
(d) None of these
4.Name the organisms which are made...
Questions :-
1 Name the book maintained by IUCN to keeps record of all endangered animals and plants.
(a) Red data book
(b) Black data book
(c) Yellow data book
(d) Green data book
2 Movement of birds and animals from original habitat to other places at a particular time is called ____________
(a) Migration
(b) Transpiration
(c) Locomotion
(d) None of these
3 Flamingos and cranes are ___________ birds.
(a) Tweety birds
(b) Ducky birds
(...
Questions :-
1 Process of clearing forests to use land for other purposes are called ___________
(a) Reforestation
(b) Deforestation
(c) Afforestation
(d) None of these
2 Name the process by which fertile land converted into desert.
(a) Drought
(b) Desertification
(c) Both of these
(d) None of these
3 Species of plants and animals which are found exclusively in a particular area called ____________
(a) Flora
(b) Fauna
(c) Endemic speci...
Questions :-
1. Petrol and matchstick are examples of ____________
(a) Rapid combustion
(b) Spontaneous combustion
(c) Explosion
(d) None of these
2. Name the combustion in which sudden reactions take place on ignition to produce heat, light, and sound.
(a) Rapid combustion
(b) Spontaneous combustion
(c) Explosion
(d) None of these
3. Fire cracker and bomb are examples of ____________
(a) Rapid combustion
(b) Spontaneous combustion
(c)...
Questions :-
1. Name the chemical process in which a substance reacts with oxygen to give off heat and light.
(a) Combustion
(b) Flame
(c) Sedimentation
(d) None of these
2. Name the gas which is essential for combustion.
(a) CO2
(b) O2
(c) Cl2
(d) None of these
3. Name the lowest temperature at which a substance catches fire.
(a) Critical temperature
(b) Inflammable temperature
(c) Ignition temperature
(d) None of these
4. Name the...
Questions :-
1. Name the gas which mainly contains methane, but also contains CO2, H2S in small amount.
(a) Coal
(b) Petroleum
(c) Natural gas
(d) None of these
2. At high temperature, natural gas is compressed as ___________
(a) CNG
(b) LPG
(c) JPG
(d) None of these
3. Name the fuel which is used in stoves, lamps.
(a) Petrol
(b) Diesel
(c) Kerosene
(d) Paraffin wax
3. Name the substance which is used in lubrication.
(a) Lubricat...
Questions :-
1. Name the resources that found in nature and can be used by people.
(a) Natural resource
(b) Man – made resource
(c) Human resource
(d) None of these
2. Air is an example of __________
(a) Human resource
(b) Man – made resource
(c) Natural resource
(d) None of these
3. Name the resources present in unlimited quantity in nature.
(a) Inexhaustible natural resources
(b) Exhaustible natural resources
(c) Limited natura...
Questions :-
1. Sulphur reacts with oxygen to form __________
(a) Sulphur dioxide
(b) Sulphur hydroxide
(c) Sulphur carbonate
(d) None of these
2. Name the gas which is most important for human life.
(a) Chlorine
(b) Oxygen
(c) Sulphur
(d) Nitrogen
3. Name the gas which is useful in water purification.
(a) Chlorine
(b) Oxygen
(c) Sulphur
(d) Nitrogen
4. Name the element which is used for making utensils.
(a) Iron
(b) Copper
(...
Questions :-
1. Name the material which are hard, sonorous, good conductor of heat and electricity.
(a) Non – metal
(b) Metals
(c) Both of these
(d) None of these
2. Name the material which is bad conductor of heat and electricity.
(a) Non – metals
(b) Metal
(c) Both of these
(d) None of these
3. Calcium is an example of _________
(a) Metal
(b) Non – metal
(c) Both of these
(d) None of these
4. Chlorine is an example of _________...