No products in the cart.

Ask questions which are clear, concise and easy to understand.

Ask Question

    • Posted by Gurdeep Singh 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Amrendra Kumar 7 years, 8 months ago

    1. The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space). 2. It consists of a lipid bilayer with embedded proteins. 3. The basic function of the cell membrane is to protect the cell from its surroundings. 4. The cell membrane controls the movement of substances in and out of cells and organelle.

    1Thank You

    ANSWER

    • Posted by Aithighya Ghosh 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Ayush Kamal 7 years, 7 months ago

    Nylon is the first synthetic fiber

    1Thank You

    ANSWER

    • Posted by Rakesh Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 7 months ago

    The circulation of nitrogen elements through living things and non-living environment is called nitrogen cycle in nature.
    1)The atmosphere contains nitrogen gas.The nitrogen fixing bacteria(present in the soil and in the root nodules of leguminous plants),blue green algae and lightning in the sky nitrogen gas from the atmosphere and convert it into compounds of nitrogen which go into soil.
    2)The plant take compounds of nitrogen from the soil for their growth.The plants absorb the nitrogen compounds from the soil through their roots.The plants convert the compounds of nitrogen into plant proteins and other organic compounds which make up the body of plants.
    3)The plants are eaten up by animal as food.Animals convert plant protein into animal protein and other organic compounds which make up their body.Some animals also eat other animals to obtain nitrogen compounds.
    4)When plants and animals die,the complex nitrogen compounds present in their dead bodies are decomposed and converted into simple compounds of nitrogen by certain bacteria and fungi present in the soil.All the simple compounds of nitrogen formed in this way go into the soil.The compounds of nitrogen which were taken by the plants from the soil during their growth are returned to the soil.These nitrogen compounds are again absorbed by the new plants for their growth and this part of nitrogen cycle is repeated endlessly.
    5)Some of the compounds of nitrogen are decomposed by denitrifying bacteria present in the soil to form nitrogen gas.The nitrogen gas goes back into the atmosphere.

    1Thank You

    ANSWER
    P

    • Posted by Aman Bhagan 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Aman Bhagan 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Aishwarya Gupta 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Jai Prakash 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 3 answers

    Preet Arsh 7 years, 8 months ago

    Answer

    0Thank You

    Amrendra Kumar 7 years, 8 months ago

    Because of static electric current

    1Thank You

    Jai Prakash 7 years, 8 months ago

    Answer

    0Thank You

    ANSWER

    • Posted by Dilpreet Singh 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Amrendra Kumar 7 years, 8 months ago

    When they die they get decomposed by organisms which release their nitrogen back into the soil

    0Thank You

    ANSWER

    • Posted by Kashish Ranjan 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Sonali Aggarwal 7 years, 8 months ago

    The conditions required for combustion are:

    1.Presence of combustible substance.(A substance that can burn)

    2.Presence of supporter of combustion like air or oxygen.

    3.Heating the combustible substance to its ignition temperature.

     

    2Thank You

    ANSWER

    • Posted by Sadia Mujawar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Harsh Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Oindrieel Mondal 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Ansh Pratap Singh 7 years, 8 months ago

    the material or protoplasm within a living cell, excluding the nucleus

    2Thank You

    ANSWER

    • Posted by Aman Singh 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Ansh Pratap Singh 7 years, 8 months ago

    Natural fibres are good to wear and comfortable. But their cost is high. Synthetic Fibres are cheap but sometimes uncomfortable. Manufacturers mix synthetic fibres with natural fibres so that cloth they make get the characteristics of both synthetic and natural fibres. They become comfortable to wear and cheap in price..

    1Thank You

    Oindrieel Mondal 7 years, 8 months ago

    To make it cheap,dublicat and less durable compare to natural fibre

    3Thank You

    ANSWER

    • Posted by Harsh Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Oindrieel Mondal 7 years, 8 months ago

    Harmosomes are the minerals given in a pure form

    1Thank You

    ANSWER

    • Posted by Shreesh Chhanikar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Ananta Sandhu 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Aditya Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 4 answers

    Ansh Agarwal 7 years, 8 months ago

    Chemical fertilisers should be used in limited amount because excess feritliser lead to destroy the crop and to also pollute the water.

    1Thank You

    Palak Prajapati 7 years, 8 months ago

    Because they were made up of inorganic matter which spoils the fertiliti of the field which damages the production of crop

    1Thank You

    Meenal Maheshwari 7 years, 8 months ago

    Because this largest scale of field than crops is spoilt

    2Thank You

    Khushboo Patil 7 years, 8 months ago

    Because if they are used in large quantity then they can damage the crops

    4Thank You

    ANSWER

    • Posted by Aditya Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Ansh Agarwal 7 years, 8 months ago

    1.it doesnot provide any humus to the soil. 2. It is became the source of soil pollution. 3.it makes the soil less fertile

    2Thank You

    Jeet Khan 7 years, 8 months ago

    i) It has specific mineral ii) It can be easily obtained

    2Thank You

    ANSWER

    • Posted by Aditya Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 7 months ago

    Nitrogenous fertilizers : These fertilizers supply nitrogen. Examples include urea and ammonium nitrate.

    0Thank You

    ANSWER

    • Posted by Aditya Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 7 months ago

    Potash is a major ingredient in most commercial fertilizers which contain a mix of potassium (K), nitrogen (N) and phosphate (P). Potassium from potash is often referred to as the “regulator” in crop production influencing over 60 enzyme systems, which control crop quality. The demand for fertilizer is rising rapidly:
    examples
    a· Potassium nitrate (KNO3),
    b· Potassium chloride (KCl) and
    c· Potassium sulphate (K2SO4).

    0Thank You

    ANSWER

    • Posted by Aditya Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Siddhi Gupta 7 years, 8 months ago

    Chemical fertilizers are prepared from chemicals in factories . They are rich in absorbable plant nutrient. They are not rich in humus. For example - NPK, ammonium sulphate,urea etc

    1Thank You

    ANSWER

    • Posted by Aditya Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Yogita Ingle 7 years, 7 months ago

    Manures are used in bulk because of number of advantages-
    1. It improves the soil quality.
    2. Increases the water holding capacity of the soil.
    3. Renewable, biodegradable and form no toxic chemicals.
    4. It give all the nutrients to soil which is required for the growth of the plant.

    0Thank You

    ANSWER

    • Posted by Dheeraj Kumar Kumar 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Kripansh Pandey 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Kripansh Pandey 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Ayush Kamal 7 years, 7 months ago

    Please fast quickly

    0Thank You

    ANSWER

    • Posted by Abhay Pundir 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    • Posted by Ankit Mishra 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Khushi Nain 7 years, 8 months ago

    The heating treatment of the milk to kill bacteria is called pasteurisation.

    1Thank You

    Siya Mishra 7 years, 8 months ago

    This is the technique used to store milk. It is heated to about 70°C for a minute and cooled quickly. This kills microorganisms.

    1Thank You

    ANSWER

    • Posted by Dalveer Singh 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 2 answers

    Sadia Mujawar 7 years, 8 months ago

    A large number of microorganisms which v can't c by our naked eyes n some r friend n some r fie these r known as bacteria

    0Thank You

    Vanshika Arora 7 years, 8 months ago

    A member of a large group of unicellular mmicroorganisms which have cell walls but lack organelles and an organized nucleus , including some which can cause disease.

    0Thank You

    ANSWER

    • Posted by Aithighya Ghosh 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Sunder Singh Bharara 7 years, 8 months ago

    Rayon

    1Thank You

    ANSWER

    • Posted by Ipshita Garg 7 years, 8 months ago

    CBSE > Class 08 > Science
    • 0 answers
    ANSWER

    myCBSEguide App

    myCBSEguide

    Trusted by 1 Crore+ Students

    Install Now

    Test Generator

    Test Generator

    Create papers online. It's FREE.

    Try Now

    CUET Mock Tests

    CUET Mock Tests

    75,000+ questions to practice only on myCBSEguide app

    Install Now
    Google Play

    Download myCBSEguide App

    All Courses

    Other Websites

    CBSE Courses

    Resources

    Corporate

    NCERT Solutions

    CBSE Sample Papers

    All Content and Intellectual Property is under Copyright Protection | myCBSEguide.com ©2007-2026