Give examples of the importance of climate in the living world with explanations, in your own words.
Concept: Weather
Complete the statement using the given options and justify those statements.
A description of the climatic conditions of short duration in a particular area is ____________.
Concept: Weather
Complete the following Chemical reaction.
........+....... → CO2 + 2H2O + Heat
Concept: Carbon: a Versatile Element
Complete the following Chemical reaction.
2 NaOH + CO2 → ........+........
Concept: Carbon: a Versatile Element
Complete the following Chemical reaction.
..........+......... →CH3Cl + HCl
Concept: Carbon: a Versatile Element
Which vaccines are given to infants? Why?
Concept: Uses of Microorganisms (Microbes)
How is a vaccine produced?
Concept: Uses of Microorganisms (Microbes)
How do antibiotics cure disease?
Concept: Uses of Microorganisms (Microbes)
Are the antibiotics given to humans and animals the same? Why?
Concept: Uses of Microorganisms (Microbes)
Why is it necessary to safely store the pathogens of a disease against which vaccines are to be produced?
Concept: Uses of Microorganisms (Microbes)
What are ‘broad-spectrum antibiotics'?
Concept: Uses of Microorganisms (Microbes)
Water in the waterfall flows from a higher level to the lower level because of ____________.
Concept: Electric Potential (Electrostatic Potential) and Potential Difference
The differences between the electrostatic potential of the positive end the negative end of an electric cell is the __________ of the cell.
Concept: Electric Potential (Electrostatic Potential) and Potential Difference
Three electric cells of potential difference 1.5 V each have been connected as a battery. The potential differences of the battery will be ________ V.
Concept: Electric Potential (Electrostatic Potential) and Potential Difference
Electric cells having 2 V potential difference each have been connected in the form of a battery. What will be the total potential difference of the battery in both cases ?
(i)
(ii)
Concept: Electric Potential (Electrostatic Potential) and Potential Difference
Fill in the blank to complete the statement. Justify the statement.
The first generation computers used to shut down because of ___________.
Concept: Important Components of a Computer
Sketch and label the figure of the following plant and explain them into brief.
Spirogyra
Concept: Kingdom Plantae
Sketch and label the figure of the following plant and explain them into brief.
Marchantia
Concept: Kingdom Plantae
Match the proper terms from columns A and C with the description in column B.
| ‘A’ | ‘B’ | ‘C’ |
| Thallophyta | Seeds are formed in fruits. | Fern |
| Bryophyta | No natural covering on seeds. | Cycas |
| Pteridophyta | These plants mainly grow in water. | Tamarind |
| Gymnosperms | These plants need water for reproduction. | Moss |
| Angiosperms | Tissues are present for the conduction of water and food | Algae |
Concept: Kingdom Plantae
