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05:10
Water in a pond appears dark green and contains filamentous structures Name these structures and the
01:34
How is washing soda obtained from sodium chloride Give chemical equation of the reactions involved i
01:56
What happens when electric current is passed through an aqueous solution of sodium chloride called b
01:48
Name the acid and the base from which common salt can be obtained State the nature (acidic/basic/neu
03:42
TOP 7 MATHS EXAM TIPS TO ACE YOUR CBSE BOARD EXAMS | CLASS 10
09:17
Basic Proportionality Theorem BPT or Thales Thoerem | If a line is drawn parallel to one side of a t
06:41
In an AP of 40 terms the sum of first 9 terms is 153 and the sum of last 6 terms is 687 Determine th
09:14
In the given figure PA, QB and RC are each perpendicular to AC. If AP = x, BQ = y and CR = z, then
01:58
CBSE NEW UPDATE | GOOD NEWS | Dear topper
08:12
A rectangular floor area can be completely tiled with 200 square tiles If the side length of each ti
07:13
BINGO is game of chance The host has 75 balls numbered 1 through 75 Each player has a BINGO card wit
05:05
An arc of a circle of radius 21 cm subtends an angle of 60 deg at the centre Find the length of the
11:16
A backyard is in the shape of a triangle ABC with right angle at B AB = 7 m and BC = 15 m A circular
04:52
A pole 6 m high is fixed on the top of a tower The angle of elevation of the top of the pole observe
06:40
The sum of first and eighth terms of an AP is 32 and their product is 60 Find the first term and com
05:17
A block of wood is kept on a tabletop The mass of wooden block is 5 kg and its dimensions are 40 cm
05:40
Common salt is a very important chemical compound for our daily life Its chemical name is sodium chl
00:46
Which part of the human brain is responsible for thinking picking up a pencil controlling blood pres
02:51
GOOD NEWS FOR CLASS 10th FROM | CBSE CLASS 10 OFFICIAL UPDATE CBSE 2025-26 | TWO BOARD EXAMS 2025-26
03:32
In life there are certain changes in the environment called stimuli to which we respond appropriatel
01:29
DIFFERENCE BETWEEN GRACE MARKS AND BONUS MARKS | Dear topper | Rohit Kumar
02:02
The electrical resistivity of three materials A,B and C at 20 degree C is given below Classify these
02:40
CBSE ISSUES 😡 STRICT EXAM NOTICE FOR CLASS 10 & 12 STUDENTS 2024-25 CBSE BIG UPDATE 2025 🔥🔥
03:30
If we want to obtain a virtual and magnified image of an object by using a concave mirror of focal l
01:06
Draw a ray diagram to show the formation of a rainbow Mark on it points a b and c as given below
07:10
Metallic silos are used by farmers for storing grains Farmer Girdhar has decided to build a new meta
04:17
The students in a class took a thick sheet of cardboard and made a small hole in its centre Sunlight
04:54
Ms Sheela visited a store near her house and found that the glass jars are arranged one above the ot
11:16
Triangle is a very popular shape used in interior designing The picture given above shows a cabinet
03:19
State two limitations of electrical impulses in multicellular organismsWhy is chemical communication
00:45
An electric bulb is rated 220 V 11W The resistance of its filament when it glows with a power supply
01:37:42
SCIENCE CLASS 10 CBSE BOARD EXAM 20th Feb 2025 SOLUTIONS SET 1 | SCIENCE ANSWER KEY AND PAPER ANALYS
03:08
Why do we balance a chemical equation Name and state the law that suggests the balancing of a chemic
00:59
To get an image of magnification -1 on a screen using a lens of focal length 20 cm
03:55
A carbon compound A is widely used as a preservative in pickles and has a molecular formula C2H4O2 T
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A carbon compound A on heating with excess conc H2SO4 forms a compound B which on addition of one mo
01:23
A piece of wire of resistance R is cut lengthwise into three identical parts These parts are then co
03:49
The minimum number of identical bulbs of rating 4V 6W that can work safely with desired brightness
01:30
Give reasons for the following Walls of alveoli contain an extensive network of blood vessels
00:48
Name the type of chemical reaction in which calcium oxide reacts with water Justify your answer by g
01:10
There is a hormone which regulates carbohydrate protein and fat metabolism in our body Name the
01:28
How is the movement of leaves of a sensitive plant different from the downward movement of the roots
01:57
Science Class 10 CBSE BOARD Which chapter how many marks and which year | Dear topper
01:38
Two magnetic field lines do not intersect each other Why How is a uniform magnetic field in a given
00:42
Give reasons for the following The diaphragm flattens and ribs are lifted up when we breathe in
00:43
Give reasons for the followingLungs always contain a residual volume of air
01:08
Give reasons for the following Rings of cartilage are present in the throat
00:56
Why is respiratory pigment needed in multicellular organisms with large body size
02:08
State one role of each of the following in human digestive system Hydrochloric acid Villi Anal Sphin
01:47
The acid rain can make the survival of aquatic animals difficult How
01:44
The pH of a sample of tomato juice is 4.6 How is this juice likely to be in taste Give reason to jus
01:21
Write one chemical equation each for the chemical reaction in which the following have taken place C
12:46
How Board Exam Copies are Checked?😱| Secret Tips to Boost your marks
01:48
SCIENCE CLASS 10 QUESTION TYPOLOGY | SCIENCE QUESTION PAPER PATTERN DESIGN 2025 CBSE BOARD
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ACIDS BASES AND SALTS CLASS 10 | ONE SHOT | RAPID REVISION 🔥🔥 | FULL CHAPTER SCIENCE
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CHEMICAL REACTIONS AND EQUATIONS CLASS 10 | ONE SHOT | RAPID REVISION 🔥🔥 | FULL CHAPTER SCIENCE
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MAGNETIC EFFECTS OF ELECTRIC CURRENT CLASS 10 | ONE SHOT | RAPID REVISION 🔥🔥 | FULL CHAPTER
03:12
A Convex lens forms a real and inverted image of a needle at a distance of 50 cm from it Where is th
01:07
In the given circuit calculate the power consumed in watts in the resistor of 2 ohm
01:29
Show how you would connect three resistors each of resistance 6 ohm so that the combination has a r