X CBSE Science includes:-
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Physics, Chemistry and Biology.
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Video Lessons
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Notes
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Time: Tuesdays and Fridays 5.00 PM
REVISION 2020 – 21 SCHEDULE
X CB Revision Plan 2020-21
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LIVE SESSIONS
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Revision Module 01
- Chemical Reactions and Equations – NOTES
- Chemical Reactions and Equations – Assignment Questions
- Light – Refelection and Refraction – NOTES
- Light – Refelection and Refraction – Assignment Questions
- Life Processes – NOTES
- Life Processes – Assignment Questions
- Revision Module 01 Work Sheet QUESTIONS
- Revision Module 01 Work Sheet SOLUTIONS (01-01-2021 Friday 8.00 PM)
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Revision Module 02
- Acids Bases and Salts – NOTES
- Acids Bases and Salts – Assignment Questions
- Human Eye and the Colourful World – NOTES
- Human Eye and the Colourful World – Assignment Questions
- How do Organisms Reproduce? – NOTES
- How do Organisms Reproduce? – Assignment Questions
- Revision Module 02 Work Sheet QUESTIONS
- Revision Module 02 Work Sheet SOLUTIONS (19-01-2021 Tuesday 8.00 PM)
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Revision Module 03
- Metals and non Metals – NOTES
- Metals and non Metals – Assignment Questions
- Electricity – NOTES
- Electricity – Assignment Questions
- Heredity and evolution – NOTES
- Heredity and evolution – Assignment Questions
- Revision Module 03 Work Sheet QUESTIONS
- Revision Module 03 Work Sheet SOLUTIONS (05-02-2021 Friday 8.00 PM)
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Revision Module 04
- Carbon and its Compounds – NOTES
- Carbon and its Compounds – Assignment Questions
- Magnetic Effects of Electric Current – NOTES
- Magnetic Effects of Electric Current – Assignment Questions
- Periodic Classification of Elements – NOTES
- Periodic Classification of Elements – Assignment Questions
- Our Enviornment – NOTES
- Our Enviornment – Assignment Questions
- Revision Module 04 Work Sheet QUESTIONS
- Revision Module 04 Work Sheet SOLUTIONS (23-02-2021 Tuesday 8.00 PM)
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MODEL EXAMS
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Instructor
₹ 12,000.00
Sir can u send class 10 cbse video class-2 as I joined late and I was not able to watch the second part
Will be provided later
Sir activity given on 30June:
Holozoic nutrition. Found in Amoeba
Metal present on chlorophyll:Magnesium
2- chambered heart:Reptiles
3-chambered heart:Amphibians
Exception;Crocodile has 4-chambered heart
Total answer – 3.14 ×10^-6 ohm meter
Answer 13.33 ohm
Late joinees will all the classes after some time. Don’t worry
Sir, 2.42=3*10rise to8/speed in diamond
Speed in diamond=3*10rise to 8/2.42
=3*100/2.42*100
=(300/242)*10rise to8
=1.23*10rise to8 is the ans i got sir
Saprophytic nutrition,Holozoic nutrition,Parasitic Nutrition
Metal related to chlorophyll is
Magnesium
Tribasic acid is an acid that has three hydrogen ions
Animal parasite -tape worm
Plant parasite – cuscuta
Parasitic Nutrition
Holozoic Nutrition
Saprophytic nutrition
And: 746 watts
Will be available later
Sir, 2.42=3*10rise to8/speed in diamond
Speed in diamond=3*10rise to 8/2.42
=3*100/2.42*100
=(300/242)*10rise to8
=1.23*10rise to8 is the ans i got sir
Sir,
1. Chlorophyll contains magnesium ion
2. Examples of animals with different chambered heart
2 Chambered heart — Fishes
3 Chambered heart– All amphibians and reptiles except crocodiles . Crocodiles have 4 chambered heart .
4 Chambered heart– Birds and mammals
Tribasic acid example- citric acid and phosphuric acid
Acetic acid is a Monobasic acid
Phosphoric, not phosphuric
Answer: 2×10^-2
Sir when will biology and physics classes be available for us?
Now one chemistry chapter is over. We will move to Light from Physics.Then one Biology
Sir, 2.42=3*10rise to8/speed in diamond
Speed in diamond=3*10rise to 8/2.42
=3*100/2.42*100
=(300/242)*10rise to8
=1.23*10rise to8 is the ans i got sir
Sir can you also send video class- 3 as i also joined late
Will be available later
Sir i could not attend the video
class 1.6 so can u pls send it in the group
Sorry no classes through groups. Please keep class timings. The entire classes will be given again for late admission students.
1.3*10 raise to 8
Sir, is the live session using zoom or cisco webex
Zoom
3.14 × 10^-6 ohm m
Sir, In double displacement reaction if the product side is written vice versa then will the answer be correct.
Can you explain that with the help of the raction given in page-11,last reaction.
Others please try to answer this
In the case of double displacement reaction if the reaction is reversed products become reactants and vice versa. But the reaction does not proceed, unless it is a reversible reaction.
In the case of reversible reactions that is forward and backwad reactions are possible, this will happen. In other cases not possible.
Our example of reaction between BaCl2 and Na2SO4 is an irreversible reaction.
Sir there are other types of nutrition like
Parasitic nutrition, Saprotrophic nutrition and Holozoic nutrition
what is the name of product formed after corrosion of Ag and Al
Silver Gold and Platinum are precious metals as they resist corrosion. Eventhough silver becomes dark due to the formation of silver sulfide layer (Ag2S). That is why silver ornaments become dark.
Aluminium isself resistant to corrosion due to formation of a thin layer of Aluminium Oxide (Al2O3)
Saptrotrophs
Sir there are other types of nutrition like
Parasitic nutrition, Saprotrophic nutrition and Holozoic nutrition
>parasitic
>saphrophytic
Parasitic ,Saprophytic and Holozoic nutrition
sir I’ve heard of saprophytic,parasitic and symbiotic but all these are types of heterotrophic nutrition. I think there are only 2 types- autotrophic and heterotrophic nutrition
Holozoic nutrition
Parasitic nutrition
Saprophytic nutrition
Parasitic nutrition – organisms that obtain nutrition from host by living inside the host body
Saprophytic nutrition- organisms break down the food outside the body and absorb the nutrients
Holozoic nutrition – organisms take in food and break it inside the body
Animal parasites include leeches , lice , fleas , tapeworm etc
While plant parasites include Viscum album , stinking corpse lily etc…
Parasitic nutrition
Holozoic nutrition
Saprophytic nutrition
Example of parasitic plants – cuscuta,yellow ratt.
Example of parasitic animal – tapeworm,ticks.
ANIMAL PARASITES:
1 HUMAN PIN WORM
2 TAPE WORM
PLANT PARASITES:
1 CUSCUTA
2 YELLOW RATTLE
ANIMAL PARASITE-TAPEWORMS
PLANT PARASITE -CUSCUTA
Chlorophyll contains magnesium metal
Two chambered heart – Pisces
Three chambered heart – Amphibia, and reptiles.
Crocodile is a reptile and have four chambered heart
Animal Parasite – leeches, ticks, tapeworm
Plant Parasite – cascuta , orchids
Animal Parasites : Tapeworm , Roundworms
Plant parasites : Cuscutta
Phloem contains :-
Companion cells
Seive tubes
Phloem parenchyma
Phloem fibers
Xylem contains :-
Tracheids
Vessels
Xylem parenchyma
Xylem fibers
Animal parasites–Tapeworm, Threadworms
Plant parasites–Cuscuta, Amarbel.
Animal Parasites – lice,tapeworms ,fleas
Plant Parasites – cuscuta, rafflesia
Ascariasis,Filariasis
Please check again. Name the parasites
animal parasites -tape worms,ticks
plant parasites – cuscuta
animal parasites: tapeworms, vampire bats,flat worms
plant parasites: cuscuta,rafflesia,red rattle
sir,
Animal parasite:- helminths
Plant parasite:- cuscuta
Animal parasite – hookworm-in human and pig, ascaris in human
Plant parasite – lichen
2 chambered heart- fishes
3 chambered heart- all reptiles except for crocodile which has 4 chambers
The metal associated with chlorophyll is magnesium.
Metal present in chlorophyll is magnesium.
animal with two chambered heart- shark
animal with three chambered heart- reptile
crocodile has four chambered heart
magnesium is the metal contained in chlorophyll
Navya Binoy
Two chambered Heart – Fishes
Three Chambered Heart- Amphibians and most reptiles like salamander
Crocodile- Four Chambered Heart
Magnesium is the metal present in chlorophlly
Metal associated with chlorophyll is magnesium.
Magnesium is present in chlorophyll pigment
Fishes have two chambered hearts
All Amphibians eg- frogs. and all reptiles except crocodile have 3 chambered hearts
Crocodiles have 4 chambered hearts
Two chambered heart- fishes.
Three chambered heart- reptiles.
Crocodiles have four chambered heart.
Two chambered heart- fishes.
Three chambered heart- reptiles.
Crocodiles -four chambered heart.
1HP= 746 W(approximately)
Sir,
Metal pigment which is found in chlorophyll is magnesium
2 chambered heart – Fishes
3 chambered heart – Amphibians
4 chambered heart – Birds and Mammals
Reptiles have three and a half chambered heart but crocodile have 4 chambered heart
2 chambered heart – Fish
3 chambered heart – snake
Crocodile has 4 chambered heart.
13.33 ohm’s
The metal present in chlorophyll is magnesium…
Fishes have two chambered heart…
Reptiles have three chambered heart…
Mammals and birds have four chambered heart…
While the crocodile being a reptile has a four chambered heart…
1 HP= 745.69 watts
metal present in chlorophyll is magnesium (mg)
fish have two chambered heart
amphibians have three chambered heart
crocodile has 4 chambered heart
matal present in chlorophyll is magnesium
2 Chambered heart – fish
3 Chambered heart – Amphibians and reptiles
Crocodile – 4chambered
Metal in chlorophyll – magnesium
2 chambered heart-fish
3 chambered heart-reptiles like lizard
crocodile had 4 chambered heart
The metal associated with chlorophyll is magnesium.
2 chambered heart -fish.
3 chambered heart -amphibian and reptiles.
Crocodiles have 4 chambers in heart.
2 Chambered animal— Pisces
3 Chambered animal— Amphibia and Reptilia eg: toad , salamander , turtle , chameleon etc.
4 Chambered animal— Aves and Mammalia eg: pigeon , crow , human , cat etc.
In reptilia crocodiles have an exception because they have 4 heart chambers
TODAY’S HOMEWORK
Metal present in chlorophyll is magnesium
2 chambered heart in fishes also called gill circulation
3 chambered heart in amphibians and reptiles
crocodile has 4 chambered heart with two ventrical and both left and right aorta which are connected to a hole .
Like mammals it has heart valves
2 chambered heart – fish
3 chambered heart – amphibians, reptiles
1.chlorophyll pigment – magnessium
2. two chambered heart- fish
3. three chambered heart- amphibians
4. Crocodile have 4 chambered heart
1)Chlorophyll contains a metal called magnesium.
2)2 chambered heart : Pisces
3 chambered heart : Ambhibia And Reptiles
Crocodile is also considered in the reptile group but it contains 4 chambered heart
Fishes have a two-chambered heart
Reptiles and amphibians have a three-chambered heart but crocodile has a four-chambered heart
Mammals and birds have a four-chambered heart
The metal associated with chlorophyll is- Magnesium
2 chambered heart animals- Fishes
3 chambered heart animals- Reptiles
Crocodiles have 4 chambered heart
Components of xylem:Trachieds, Vessels, Xylem parenchyma, Xylem fibres
Components of Pholem:Phloem fibres, Phloem parenchyma, Sieve tubes, Sieve plates, Companion cell
Micturition:The process of urination
Metal in chlorophyll- magnesium
The metal which is associated with chlorophyll is magnesium
fish has 2 chambered heart
salamander has 3 chambered heart
crocodiles have 4 chambered heart
metal associated with chlorophyll is Magnesium(Mg)
2 chambered heart- fish
3 chambered heart- all reptiles except crocodile which is having 4 chambered heart.
Xylem -tracheids, xylem parenchyma, xylem fibres, xylem vessels
Phloem -sieve tubes, companion cells, phloem fibres, phloem parenchyma
Components of phloem — Sieve tubes ,Companion cells ,Phloem parenchyma ,Phloem fibres
Components of xylem — Vessels , Tracheids , Xylem parenchyma ,Xylem fibres
Types of xylem:
Tracheids
Vessels
Xylem parenchyma
Fibres
Components of Xylem
Tracheids, vessels, xylem parenchyma, xylem fibres
Components of Phloem
Sieve Tubes, Companion Cells, Phloem Fibres and Phloem Parenchyma
Micturition
The process of urine excretion from urinary bladder…
Types of phloem:
Companion cells
Sieve tubes
Phloem fibres
Phloem parenchyma
Components of xylem-Tracheids,Vessels,xylem parenchyma,xylem fibres.
Component’s of Phloem – Sieve tubes,Companion cells, Phloem fibres , phloem parenchyma cell.
Parts of phloem- sieve tubes, companion cells, phloem- fibres, phloem- paranchyma
Xylem parts- tracheids, vessels, xylem paranchyma, xylem fibres
Micturition meaning – urination
Components of xylem-Tracheids,Vessels,xylem parenchyma,xylem fibres.
Component’s of Phloem – Sieve tubes,Companion cells, Phloem fibres , phloem parenchyma.
Micturition (urination)is the process of expelling urine from the bladder.
xylem components are:- tracheids, vessels, xylem parenchyma,xylem fibers
phloem components:- companion cells, sieve tubes, phloem fibers phloem parenchyma
micturition is the process of expelling urine from the urinary bladder
Sir
The different components of xylem are tracheids, vessels xylem paranchyma, xylem fiber
The different components of phloem are sieve tube,companion cells, phloem paranchyma, phloem fibers
The passing of urine is called micturition
Components of xylem: Trachids ,vessels , xylem parenchyma , xylem fibres
Components of phloem: Sieve cells , sieve tubes , companion cells , phloem parenchyma
Micturition: Action of urinating
components of xylem are tracheids, vessels, xylem parenchyma, xylem fibres
components of phloem are sieve tubes , companion cells, xylem parenchyma , xylem fibres
MICTURITION
After kidneys have done their job now it is the bladder’s job to store the urine and empty fully at the time of urination which is also known as micturition
Process by which the urinary bladder empties when it becomes filled is known as micturition
Xylem components–>xylem parenchyma, xylem fibres, vessels and tracheids.
Phloem components–>phloem parenchyma, phloem fibres, sieve tubes and component cells.
MICTURITION is an action of urinating.
Components of xylem – xylem tissue , tracheids , vessels,xylem parenchyma ,xylem fibres.
Components of phloem – sieve tubes , companion cells , phloem fibres , phloem parenchyma
Micturition is the process of discharging urine from the urinary bladder .
Micturition is a process by which urine is expelled from the body.
Xylem – xylem parenchyma,vessels,xylem fibres,tracheids
Phloem-sieve tubes,companion cells,phloem parenchyma,phloem fibres
mictrution- the action of urination
Xylem is composed of 4 elements
1. Xylem tracheids
2. Xylem vessels
3. Xylem parenchyma
4. Xylem fibres
Phloem is composed of
1. Sieve tubes
2. Companion cells
3. Phloem parenchyma
4. Phloem fibres
Micturition:- It is the release of urine from urinary bladder through urethra
1)Different components of Xylem: Tracheids, Vessels, Xylem fibres,
Xylem Parenchyma.
Different components of Phloem:
Sieve tubes, Companion cells, Phloem fibres, Sieve cells,Phloem parenchyma.
2)Micturition: Removal of urine from the urinary bladder is called micturition.
1. Xylem components are tracheids, vessels, xylem fibres and xylem parenchyma
2. Phloem components are sieve cells, sieve tubes, companion cells, phloem fibers and phloem parenchyma
3. Micturition – expelling of urine from the urinary bladder
Xylem components: xylem tracheids, xylem vessels, xylem parenchyma, xylem fibres.
Phloem components: sieve tubes, companion cells, phloem parenchyma, phloem fibres.
Micturition is the release of urine from urinary bladder through urethra.It is also called urination.
The components of xylem are xylem tracheids, xylem vessels, xylem parenchyma, and xylem fibers
The components of phloem are sieve tubes, companion cells phloem fibers, and phloem parenchyma
The action of urinating is called micturition
Xylem componenets- Tracheids, xylem vessels, xylem parenchyma, mylem fibres and xylem sclerenchyma
Phloem components- Companion cells, sieve tubes, phloem fibres and phloem parenchyma
Micturition is the process of expelling urine from the urinary bladder
xylem sclerenchyma?? Check again
xylem consists of tracheids,vessels ,parenchyma and fibres.
phloem consists of sieve tubes,companion cells,parenchyma and fibres
Examples of tribasic acid are phosphoric acid and citric acid
Acetic acid is a monobasic acid
Acetic acid is tetra basic
MONOBASIC
CH3COOH IS TRIBASIC
MONOBASIC
Example of a tribasic acid is Phosphoric Acid(H3PO4)
Acetic acid (CH3COOH) is monobasic
Phosphoric acid (H3PO4) is a tribasic acid.
Ascetic acid (CH3COOH) is a monobasic acid
Examples of Tribasic acid : Phosphoric acid , citric acid , oxalic acid
Acetic acid is a monobasic acid.
Oxalic acid is DIBASIC
H2C2O4
COOH – COOH
example for tribasic acid is citric acid and phosphoric acid
acetic acid (CH3COOH)IS DIBASIC ACID
acetic acid (CH3COOH)IS MONO BASIC ACID
Acetic acid (CH3COOH) is a monobasic.
EXAMPLES OF TRIBASIC ACID ARE PHOSPHORIC ACID(H3PO4) AND CITRIC ACID
Acetic acid is a mono-basic acid
Sir,
Examples of tribasic acid are phosphoric acid and citric acid
Acetic acid is monobasic
Example of tribasic acid phosphoric acid
Ascetic acid is a monobasic acid
acetic acid is monobasic
Tribasic acid….eg: Citric acid and phosphoric acid
Acetic acid is a monobasic acid
Examples fpr Tribasic acids :
-> Phosphoric acid (H3PO4)
-> Citric acid
ascetic acid- monobasic
AB=BC=AC
Angle of prism=60°
example of tribasic acid- phosphoric acid.
Acetic acid – Monobasic acid
When AB=BC=AC are equal, angle A i.e, angle of prism will be 60 degree
Angle of Prism =60 degree
90 degree per angle so total sum of all angles of a glass prism is 180 degree
OK sum of angles = 180
Then what is the value of one angle when all are equal????
ANGLE OF PRISM=60 DEGREE
The angle of prism in which all sides are equal is 60 degree
Angle of prism is 60 degree
Sir,
When AB=BC=CA ,then the angle of prisim becomes 60°
AB = 60°
BC =60°
CA= 60°
Angles A, B and C = 60
If AB = BC = AC
then Angle A ( Angle of Prism ) = 60 degree
if each side of the prism is equal then it will become an equilateral triangle and each angle will be 60
If AB=BC=AC, the triangular phase of the prism forms an equilateral triangle. In an equilateral triangle all the angles are equal and each of it’s angle is 60 degree. Therefore, angle A= angle B = angle C = 60 degree.
Rho = 3.14*10^_6
RHO=3.14 * 10^-6
resistivity is 3.0144* 10^-6…
Megha P Nair
Area=12.57 x 10^(-8) = 13 x 10^(-8) m.sq.
Therefore,
Resistivity = 3.25 x 10^(-6) ohm m
3.14*10^-6 ohm metres
3.14*10^-6 ohmmetre
18/9/2020 homework
resistivity= 3.14 x 10^ -6 Ωm
phy electricity hw answer 3.14 * 10 -6
HW
rho = 3.14*10^-6 ohm metre
3.14*10 raise to -6
Rho = 0.06281*10*-⁶
Sreekrishna Praveen
Homework Question
Chapter – Electricity
The resistivity of the given conductor = 3.14 x 10^-6 Ω m
Ans: 2×10^-2
rho=3.14*10^-6 ohm”s m
FinalAnswer: 3.14×10^-6
HW.
R=25ohm
l=1m
d=0.4mm
T=20degree
Then rho=31400ohm m
resistivity = 314*10 3
resistivity = 314*10^-6
total resistance=13.33 Ohm
22/9/2020 homework
Effective resistance= 13.33Ω
Megha P Nair
The effective resistence of the combination
= 13.4 ohm
Total resistance = 13.33
HW
Effective resistance = 13.3ohm
40/3=13.34
The effective resistance= 13.34
Ans: 13.33 ohm
R2+R3 = 5+5 = 10 ohms
(R2+R3) and R5 is parallel
1/R5 = 1/10+1/5 = 3/10
R+R4+R1 = Rp = 13.33 ohms
40/3= 13.34
Sreekrishna Praveen
CBSE Class 10
Chapter -Electricity
Homework question Answer: Effective Resistance = 13.3 Ω
effective resistance is =18.34 ohms
RS+RP=10+1.66=11.66 OHM
Rs =13.33
1 hp = 745.7 W
1 hp= 745.7 Watts
1 horswpower=746W
25/9/2020 homework
1 horsepower(hp)= 735.499 watt(W)
1Horsepower = 745.7 Watts
1 Hp=746 W
Megha P Nair
1 Horse power= 746 W
=> 1 W= 1/746
= 0.0013 HP
=1.3 x 10^(-3) HP
1hp=746W
Sreekrishna Praveen,
Homework Question
CBSE 10,
There are 745.7 watts in one horsepower
1 HORSE POWER IS EQUAL TO 746 WATT
I hp = 746Watts
1 horse power=746W
Ans: 746 watts.
1 horsepower is 745.7W
1hp = 745.7W
1Hp= 745.7W
1 HP= 746 watts
1hp=745.699872 watt
1 HP = 746 Watts
Sir, Megha of X CBSE here. Sir, why is necessary that functional groups must be directly attached to the carbon chain? What will happen if those atoms are attached indirectly ?
When the group or atom is attached directly to the carbon chain only can affect the properties of the compound. Then only it is said to be a functional group
Sir, in dihybrid crossing how will we know which character is the dominant character?
By experiment only. For our purpose of understanding we specify one character dominant and the other recessive
1.24*10⁸
metal associated with chlorophyll – magnesium
2 chambered – fishes
3 chambered – amphibians and reptiles
crocodile – 4 chambered heart
xylem components – tracheids , vessels , xylem parenchyma , xylem fibres
phloem components – companion cells , sieve tubes , phloem parenchyma , phloem fibres
Micturition – process of urine excretion from the urinary bladder .