6.Substances in Daily Use 6th Standard Science | सहावी विज्ञान

 

6.Substances in Daily Use 6th Standard Science

Q1.Substances available in nature are called ...........

1.Man-made substances
2.Plant origin
3.Natural Substances
4.Animal origin

Q2.Leather and wool are obtained from animal. They are ............... substances.

1.Man-made substances
2.Natural Substances
3.Animal origin
4.Plant origin

Q3.Jute and cotton are substances of ................

1.Man made
2.Plant origin
3.Natural
4.Animal origin

Q4.Substances obtained from living things are called.............

1.Natural
2.Man made
3.Aboitic
4.Boitic

Q5.Substances that are not obtained from living things. They are called ............

1.Aboitic
2.Boitic
3.Natural
4.Man made

Q6.New substances produced by processing naturally available substances are called ...........

1.Natural
2.Plant origin
3.Man made
4.Animal origin

Q7.The original constituent substances cannot be obtained again from new substances. such changes are called ................

1.Natural Changes
2.Irreversible changes
3.Reversible Changes
4.None of the above

Q8.Natural rubber is obtained from the sap of tree. This sap is called ...............

1.Latex
2.Sap of plant
3.Rubber
4.Water

Q9.Rubber is heated with sulphur for three to four hours. This process is called..........

1.Heating
2.Cooling
3.Vulcanization
4.Making of rubber

Q10.In rubber bands, the proportion of sulpher is ...............

1.0%
2.No
3.Very high
4.Very low

Q11.Who is discover the process of vulcanization?

1.Charles Gabbage
2. Charles Goodyear
3.Charles wood
4.Charles baybay

Q12.What is the botanical name of rubber tree?

1.Bamboosa aridinarifolia
2.Ficus benghalensis
3.Hevea Brasiliensis
4.Azadhirachta indica

Q13.In India, the maximum production of rubber is in ............... state.

1.Keral
2.Assam
3.Maharashtra
4.Tamilnadu

Q14.Paper is a kind of Network of ............ fibres.

1.Inulin
2.Pectins
3.Cellulose
4.None of the above

Q15.In India, The first factory to manufacture newspaper was established at Nepanagar in madhya pradesh in ...............

1.1920
2.1955
3.1930
4.1945

Q16.Rayon also known as ...............

1.Teren
2.Nylon
3.Decren
4.Synthetic silk

Q17.What is mean by Hydrocarbons?

1.Substance Obtained from minerals
2.Substance Obtained from paper
3.Substance Obtained from tree
4.Substance Obtained from soil

Q18.True or False. - Synthetic fabric catches fire easily.

1.true
2.false
3.
4.

Q19. ..........thread was developed simultaneously in New York and London."

1.Decren
2.teren
3.Nylon
4.silk