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Ask QuestionPosted by Anupama ?? 5 years, 4 months ago
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Posted by Pavi Thra 5 years, 4 months ago
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Kap Sharma 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
Natural vegetative propagation occurs by means of roots, underground stems, subaerial stems, aerial shoots, leaves and bulbils. Artificial vegetative propagation occurs by use of special vegetative parts such as root tubers, corm, parts of rhizome etc., or by cutting, layering, grafting and bud grafting.
Posted by Mayank Madaan 5 years, 4 months ago
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Pardeep Gupta 5 years, 4 months ago
Posted by Neha Singh 5 years, 4 months ago
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Neha Singh 5 years, 4 months ago
Posted by Anupama ?? 5 years, 4 months ago
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Posted by Vimal Yadav 5 years, 4 months ago
- 3 answers
Saurav Raj 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
Resources supplied by nature are called natural resources. The sun, air, water, soil, trees and forests, wildlife, coal, petroleum, natural gas and minerals are all natural resources. Natural resources are classified as renewable and non-renewable resources.
Posted by Rajkumar Rajkumar 5 years, 4 months ago
- 2 answers
Neha Singh 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.
Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.
Click on the given link to get the deleted syllabus :
<a href="https://www.indiatoday.in/education-today/news/story/cbse-syllabus-reduced-by-30-check-deleted-syllabus-of-cbse-class-10-1698076-2020-07-07">https://www.indiatoday.in/education-today/news/story/cbse-syllabus-reduced-by-30-check-deleted-syllabus-of-cbse-class-10-1698076-2020-07-07</a>
Posted by Rajkumar Rajkumar 5 years, 4 months ago
- 2 answers
Posted by Akash Kumar 5 years, 4 months ago
- 3 answers
Gaurav Seth 5 years, 4 months ago
HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.
Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.
Deleted syllabus of CBSE Class 10 Science
Khush Kaur 5 years, 4 months ago
Posted by Aashish Raj 5 years, 4 months ago
- 5 answers
Posted by Keerthana M 5 years, 4 months ago
- 1 answers
Meghna Thapar 5 years, 2 months ago
During an erection, the arteries expand to increase blood flow to the *****. The blood fills two tubes of spongy tissue in the ***** (corpus cavernosa). This causes them to swell, making the ***** larger and stiff, so it angles out from the body. The veins narrow, which traps the blood and maintains the erection.
Posted by Sanika Walimbe 5 years, 4 months ago
- 1 answers
Gaurav Seth 5 years, 4 months ago
The focal length of a mirror does not depend upon the nature of the medium in which it is placed whereas the focal length of a lens depends upon the medium in which it is placed. Thus, there will be no change in the focal length of the concave mirror whereas the focal length of the convex lens will change.
Posted by Pavan Krishna 5 years, 4 months ago
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Posted by Sunidhi Singh 5 years, 4 months ago
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Sunil Sahu 5 years, 4 months ago
Posted by Sunidhi Singh 5 years, 4 months ago
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Posted by Fatema Saifee 5 years, 4 months ago
- 2 answers
Yogita Ingle 5 years, 4 months ago
Double fertilization : It occurs when one male nucleus fertilizes (fuses) with egg cell to form zygote cell and other male nucleus fuses (fertilizes) with two polar nuclei to cause triple fusion. As these two types of fertilizations take place at the same time in the ovule of the plant, it is known as double fertilization.
After fertilization:
(i) Ovary develops into fruit.
(ii) Ovules develop into seeds.
Posted by Vaishnavi Belapurkar 5 years, 4 months ago
- 5 answers
Yogita Ingle 5 years, 4 months ago
When iron reacts with air, it forms iron oxide (rust)
<i>4Fe + 3O2 → 2Fe2O3</i>
In this reaction, oxygen is added to iron, thus, iron is oxidized. Here oxygen is oxidizing agent.
Posted by Vaishnavi Belapurkar 5 years, 4 months ago
- 3 answers
Ayush Kapoor 5 years, 4 months ago
Anupama ?? 5 years, 4 months ago
Posted by Borigi Adhithya 5 years, 4 months ago
- 5 answers
Posted by Suresh Gupta 5 years, 4 months ago
- 1 answers
Yogita Ingle 5 years, 4 months ago
Mendel proposed the law of inheritance of traits from the first generation to the next generation. Law of inheritance is made up of three laws: Law of segregation, law of independent assortment and law of dominance.
Posted by Kukatla Ajith Kumar Yadav Yadav 5 years, 4 months ago
- 4 answers
Anupama ?? 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
When some metals are exposed to moisture, acids etc., they tarnish due to the formations of respective metal oxide on their surface. This process is called “corrosion”.
1) 4 Ag + 2H2S + O2 → 2Ag2S + 2H2O
2) 2 Cu + O2 → 2 CuO
Khush Kaur 5 years, 4 months ago
Posted by Sulagna Mukherjee 5 years, 4 months ago
- 1 answers
Sanika Walimbe 5 years, 4 months ago
Posted by Jayant Bisht 5 years, 4 months ago
- 3 answers
Posted by Ajay Ram Ajay 5 years, 4 months ago
- 3 answers
Posted by Vaibhavi & Vaishnavi Bokare 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Life without light would have been pretty dull. Light travels at a speed of 186,000 miles per second. You must have observed that in your house that whenever a beam of light enters a dark room through a tiny hole in the window, the lightwave always travels in a straight line.
Let us carry out a small activity to show that lightwave travels along a straight line. Take three CD’s and align them together. Align them in such a way that all the CD’s line in a straight line. Now take a candle and place it at the other end. Do make sure that the tip of the candle and the holes of the CD’s all lie in the straight line. Ensure that the height of the CD’s and the tip of the candle are same. Observe the flame of the candle. We are able to see the flame of the candle because the light wave travels through the holes and reaches our eye.
Now if suppose we displace the center of the CD’s we observe that we are not able to see the flame of the candle. Why does that happen? This is because the light gets blocked. If the light could have the ability to take a curve and travel, we could have seen the lightwave. But since light travels in a straight line, we were unable to see the flame of the candle when the CD is displaced. This proves that light travels along a straight line
In the above picture, we can clearly see that light coming through the holes in the window travel along a straight line
Posted by Lavi Pandey 5 years, 4 months ago
- 2 answers
Kap Sharma 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
The copying of DNA during reproduction is important because:
- The replication of DNA ensures that each daughter cell formed at the end of cell division, receives equal amount of DNA.
- If DNA won't be copied then the daughter cells won't receive all necessary genes.
- There may be absence of important proteins which are encoded by DNA, if DNA won't be replicated.
- Copying of DNA may result in recombination which will lead to evolution.
- Transfer of genetic material from one generation to other makes the organisms to have similar functions.
- Stability of population is maintained.
Posted by Aprita Pal 5 years, 4 months ago
- 2 answers
Gaurav Seth 5 years, 4 months ago
The amount of current flowing through the electrical component is reduced by half.
Explanation:
According to Ohm’s law
V = IR
where
V= potential difference
I= Current
R = Resistance
By modifying the equation
I=V/R ——- (i)
potential difference across the two ends of the component decreases to half
therefore, the new potential difference be Vʹ=V/2
Resistance remains constant across the electrical component
new current is drawn by the electrical component is Iʹ = Vʹ/R
= (V/2)/R {Substituting Vʹ=V/2 in the above equation}
= (1/2) (V/R)
= (1/2) I = I/2
Hence the amount of current flowing through the electrical component is reduced by half.
Avinash S 5 years, 4 months ago
Posted by Lakshit Saini 5 years, 4 months ago
- 2 answers
Yogita Ingle 5 years, 4 months ago
Petiole: Petiole is the long, thin, stalk that links the leaf blade to the stem.
Anupama ?? 5 years, 4 months ago
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Sonu Gop 5 years, 4 months ago
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