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How viruses are different from microbes?

Posted by Jyoti Kumari ? 4 years, 3 months ago

1 answers

Jyoti Kumari ? 4 years, 3 months ago

Viruses are also microscopic but different from microbes. They reproduce inside the cell of host organism which may be a bacterium plant or animals

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ANSWER

How viruses are different from microbes ?

Posted by Khushi Choudhary 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

How many state of motion an object has

Posted by Prabhuram Barik 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

What is the formula of speed

Posted by Abhishek Yadav 4 years, 3 months ago

CBSE > Class 08 > Science

5 answers

Harshita Dogra 4 years, 2 months ago

Speed = Distance / Time

0Thank You

Harshita Dogra 4 years, 2 months ago

Distance Speed = -------------------- Time

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Abhayanand Arya 4 years, 3 months ago

Distance travelled/time taken to cover the distance

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Sanket ... 4 years, 3 months ago

Speed = distance/time taken

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Ankush Dutta 4 years, 3 months ago

Speed = distance/time taken

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ANSWER

Polio meaning

Posted by Gourav Kumar 4 years, 3 months ago

CBSE > Class 08 > Science

2 answers

Kali Ghati Ka Don Hamesha Ke Liye 4 years, 3 months ago

It is a virus spread in air

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Akshaya Pr 4 years, 3 months ago

Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus.

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ANSWER

How the vaccine are made?

Posted by Samriddhi Agarwal 4 years, 3 months ago

CBSE > Class 08 > Science

4 answers

Vizzy Viz 4 years, 3 months ago

By dead and weakend microbes

4Thank You

Ayush Kumar Singh 4 years, 3 months ago

Vacine was made by very weak same virus

2Thank You

Vishakha Sharma 4 years, 3 months ago

What is gravitional force ?

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Sivaharini Veeraiah 4 years, 3 months ago

Vaccines are made of good microbes that have the capacity of fighting with bad microbes

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ANSWER

Science Ch 2 last question

Posted by Davi Myd Khuman 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

What is petrolium

Posted by Sahil Patel 4 years, 3 months ago

CBSE > Class 08 > Science

2 answers

Harshita Dogra 4 years, 2 months ago

Spelling - PETROLEUM

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Pranav Prabhakar 4 years, 3 months ago

mineral oil that is found under the ground or sea and is used to make petrol, plastic and other types of chemical substances is called petroleum.

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The sting of an ant contains___________. a) hydrochloric acid b) formic acid c) sulphuric acid d) nitric acid

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

5 answers

Lanin Gogoi 4 years, 3 months ago

Formic acid

1Thank You

Soumya Subhankar Sahoo 4 years, 3 months ago

(b) Formic Acid

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Subrat Kumar Panda 4 years, 3 months ago

Answer is b

1Thank You

Subrat Kumar Panda 4 years, 3 months ago

What a easy questions you send

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Stuti Tripathi 4 years, 3 months ago

B is the correct answer

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Phenolphthalein is a synthetic indicator and its colour in acidic and basic solutions, are a) red and blue b) blue and red c) pink and colourless d) colourless and pink

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

3 answers

Pranav Prabhakar 4 years, 3 months ago

b)blue and red

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Lanin Gogoi 4 years, 3 months ago

Maybe d

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Soumya Subhankar Sahoo 4 years, 3 months ago

Maybe C

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ANSWER

Products of a neutralization reaction are always: a) an acid and a base b) an acid and a salt c) a salt and water d) a salt and a base

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

2 answers

Pranav Prabhakar 4 years, 3 months ago

c)a salt and water

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Kanu Choudhary 4 years, 3 months ago

Acid and base

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To protect tooth decay, we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is: (a) acidic (b) basic (c) neutral (d) corrosive

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

1 answers

Priyanshi Mittal 4 years, 3 months ago

Basis

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The substance whose odour changes in acidic (or) basic solutions are called a) universal indicators b) olfactory indicators c) natural indicators d) mixed indicator

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

The chemical name of washing soda is a) sodium bicarbonate b) sodium carbonate c) sodium hydroxide d) sodium chloride

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

1 answers

Priyanshi Mittal 4 years, 3 months ago

Sodium carbonate

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ANSWER

Which nature does pH=7 solutions have? a) acidic b) basic c) neutral d) amphoteric

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

1 answers

Sheetal Choudhary 4 years, 3 months ago

Answer is c

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ANSWER

Bases which are soluble in water are called a) acids b) alkaloids c) aromatics d) alkalis

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

pH scale was proposed by a) Sorensen b) Bohr c) Maxwell d) Schrodinger

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

1 answers

Sheetal Choudhary 4 years, 3 months ago

Answer is a

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What is the colour of methyl orange in acidic medium a) red b) pink c) colourless d) yellow

Posted by Hirenya A 4 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Sia ? 4 years, 1 month ago

red

0Thank You

ANSWER

Acids, Bases and Salts The acid which is completely ionized into its ions is called as a) weak acid b) strong acid c) acidic salt d) none of these

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

14 Which amongst the following symbols is the correct representation for the formation of a precipitate? a) b) ↑ c) ↓ d) 

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

The colour of iron sulphate (aqueous) is a)Green b) Colourless c) Blue d) Pink 14 Which amongst the following symbols is the corr

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Which one of the following processes involves chemical reactions? a) Storing of oxygen gas under pressure in a gas cylinder b) Liquefaction of air c) Keeping petrol in a china dish in the open d) Heating copper wire in presence of air at high temperature

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

The following reaction is used for the preparation of oxygen gas in the laboratory 2Kclo3(s) →2Kcl(s) +3o2 (g) Which of the following statement(s) is(are) correct about the reaction? a) It is a decomposition reaction and endothermic in nature b) It is a combination reaction c) It is a decomposition reaction and accompanied by release of heat d) It is a photochemical decomposition reaction and exothermic in nature

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Which of the following gases can be used for storage of fresh sample of oil for a long time? a) Carbon dioxide or oxygen b) Nitrogen or oxygen c) Carbon dioxide or helium d) Helium or nitrogen

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

In double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not there, which of the following can be used in place of lead nitrate? a)Lead sulphate (insoluble) b) Lead acetate c) Ammonium nitrate d) Potassium sulphate

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Which of the following is(are) an endothermic process(es)? a) Dilution of sulphuric acid b) Sublimation of dry ice c) Condensation of water vapours d) Evaporation of water a) A and C b) B only 3) C only 4) B and D

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Electrolysis of water is a decomposition reaction. The mole ratio of hydrogen and oxygen gases liberated during electrolysis of water is a) 1:1 b) 2:1 c) 4:1 d) 1:2

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following represent the type of the reaction involved? a) Displacement reaction b) Precipitation reaction c) Combination reaction d) Double displacement a) A only b) B only 3) D only 4) B and D

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

Which among the following is (are) double displacement reaction(s)? a) Pb + CuCl2 → PbCl2 + Cu b) BaCl2 + Na2 SO4 → BaSO4 + 2NaCl c) C + O2 → CO2 d) CH4 + 2O2 → CO2 + 2H2 O a) A and D b) B only c) A and B d) C and D

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. Light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation? a.KMno4 is an oxidising agent, it oxidises FeSO4 b. FeSO4 acts as an oxidising agent and oxidises KMno4 c. The colour disappears due to dilution, no reaction involved. d.KMno4 is an unstable compound and decomposes in presence of FeSO4 to a colourless compound

Posted by Hirenya A 4 years, 3 months ago

CBSE > Class 08 > Science

0 answers

ANSWER

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