Ask questions which are clear, concise and easy to understand.
Posted by Gautam Singh Rathore 21 hours ago
Posted by Pintu Singh 23 hours ago
Any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. As a consequence, atoms for the same isotope will have the same atomic number but a different mass number (atomic weight).
Isotopes: Atoms of the same element with the same atomic number but different mass numbers are called isotopes.
Examples: 1H1, 1H2, 1H3 are the isotopes of hydrogen,6 C12 ;6C13 are isotopes of carbon.
The chemical properties of all the isotopes of an element are the same. This is due to the presence of same number of electrons.
Posted by Khurshid Ahmad 1 day ago
Law of conservation of mass: It states that mass can neither be created nor destroyed in a chemical reaction. During any change, physical or chemical, matter is neither created nor destroyed. However it may change from one form to another.
Posted by Bhavya Sharma 1 day, 13 hours ago
Posted by Harsh Bothra 1 day, 20 hours ago
|Bacterial cell||Onion peel|
|1. Size of a cell is generally small (1-10 mm)||1. Size of a cell is generally large (5-100 mm).|
|2. Nucleus is absent (nuclear region or nucleoid is not surrounded by a nuclear membrane.)||2. Nucleus is present (nuclear material is surrounded by a nuclear membrane).|
|3. ft contains a single chromosome.||3. It contains more than one ' chromosome.|
|4. Nucleolus is absent||4. Nucleolus is present.|
|5. Membrane bound cell organelles are absent.||5. Membrane bound cell organelles such as mitochondria, plastids, endoplasmic eticulum, Golgi apparatus, lysosomes, peroxisomes, etc., are present.|
|6. Cell division takes place by fission or budding (no mitosis).||6. Cell division occurs by mitotic of meiotic cell division.|
Posted by Yuktha Shekar 2 days, 12 hours ago
Posted by Preeti Karhadkar 2 days, 18 hours ago
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Posted by Krovvidy Rahul 3 days, 2 hours ago
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