CBSE Class 10 - Science - Differentiate between Pollination and Fertilisation

 

Frequently asked questions:

Differentiate between Pollination and Fertilisation

Differentiate between Pollination and Fertilisation
Pollination	Fertilisation
It is the transfer of pollen grains from anther to stigma.	It is the fusion of male and female gametes.
It's a physical process.	It's a biological process.
It occurs on the stigma of a flower.	It occurs inside the ovule.
It takes place before fertilisation.	It takes place after pollination.
No zygote is formed.	Zygote is formed after the fertilisation.
It may need external agents like wind, water, insects, animals, etc.	No external agents required.

CBSE Class 10 - Science - Electricity - Important Definitions

 Important definitions:

• One ampere: One ampere is the current constituted by the flow of one coulomb of charge per second.
• One volt: One volt is the potential difference between two points in a current carrying conductor when 1 joule of work is done to move a charge of 1 coulomb from one point to the other.
• One ohm: If the potential difference across the two ends of a conductor is 1 V and the current through it is 1 A, then the resistance R, of the conductor is 1 Ω.
• One watt: One watt is the power consumed by a device that carries 1 A of current when operated at a potential difference of 1 V.
• One unit of electric energy: One unit of electric energy is the energy consumed when 1 kilowatt of power is used for 1 hour.

CBSE Class 10 - Science - Differentiate between Saturated Hydrocarbons and Unsaturated Hydrocarbons

Frequently asked questions:

Differentiate between Saturated Hydrocarbons and Unsaturated Hydrocarbons 

CBSE Class 10 - Electricity - Important formulae

 
 Important information/formulae

Sr. No.	Description	Formula	More information
1	Relationship between current and charge	𝑰=	Where, I – current Q – charge t – time
2	Relationship between potential difference, work done and charge	𝑽=	Where, V – potential difference W – work done Q – charge
3	Ohm’s law	V = IR	Where, V – potential difference I – current R – Resistance
4	Resistance	𝑹 =	Where, R – resistance of a wire l – length of the wire A – cross-section area of the wire ρ – resistivity of the conducting material of the wire
5	Electric power	P = VI Or P = I2R Or P =	Where, P – electric power V – potential difference I – current R – resistance of the conductor
6	Joule’s law of heating	H = I2Rt	Where, H – heat energy I – current R – resistance t – time
7	System of 3 resistors connected in series	Rs = R1 + R2 + R3	Where, Rs - Effective resistance of the series combination of three resistors R1, R2 and R3
8	System of 3 resistors connected in parallel	=  +  +	Where, Rp – Effective resistance of the parallel combination of the three resistors R1, R2 and R3