Chemistry-
General
Easy
Question
Assertion (A) : In all atoms, the number of protons, electrons and neutrons must be equal.
Reason (R) : The mass of an electron is negligible when compared to that of a neutron.
- Both A & B are true, R is the correct explanation A
- Both A & B are true, R is not the correct explanation of A
- A is true, R is false
- A is false, R is true
The correct answer is: A is false, R is true
Related Questions to study
Chemistry-
The central part of the atom is called nucleus. Nucleus contains protons and neutrons. The nucleus is positively charged due to the presence of positively charged protons in it. The electrons are outside the nucleus and have negligible mass. The electrons revolve rapidly round the nucleus in fixed circular paths called “Shells” (or) “Orbits” (or) “Energy Levels”. The neutrons present inside the nucleus possess no charge.
The path in which electrons revolve is called....
The central part of the atom is called nucleus. Nucleus contains protons and neutrons. The nucleus is positively charged due to the presence of positively charged protons in it. The electrons are outside the nucleus and have negligible mass. The electrons revolve rapidly round the nucleus in fixed circular paths called “Shells” (or) “Orbits” (or) “Energy Levels”. The neutrons present inside the nucleus possess no charge.
The path in which electrons revolve is called....
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The number of neutrons in 
is ...............................
The number of neutrons in is ...............................
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The positively charged fundamental particle is...
The positively charged fundamental particle is...
Chemistry-General
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The absolute charge of the electron is....
The absolute charge of the electron is....
Chemistry-General
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Which of the following is a tetraatomic molecule ?
Which of the following is a tetraatomic molecule ?
Chemistry-General
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Matter is made up of extremely small particles called .....................
Matter is made up of extremely small particles called .....................
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A substance burns rapidly in oxygen as compared with air.This shows that:
A substance burns rapidly in oxygen as compared with air.This shows that:
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Statement (A) : Rusting is a fast process.
Statement (B) : Rusting is a slow process.
Statement (A) : Rusting is a fast process.
Statement (B) : Rusting is a slow process.
Chemistry-General
chemistry-
Two pupils Ram and Shyam have taken lime water in a vessel, as shown in the figure. Ram is inhaling air from straw A and Shyam is blowing air through straw B. In which case lime water turns milky faster and Why ?
Two pupils Ram and Shyam have taken lime water in a vessel, as shown in the figure. Ram is inhaling air from straw A and Shyam is blowing air through straw B. In which case lime water turns milky faster and Why ?
chemistry-General
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................. air contains more CO2 than ................. air.
................. air contains more CO2 than ................. air.
Chemistry-General
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Plants store food in the form of:
Plants store food in the form of:
Chemistry-General
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Water vapour in air is splits into oxygen and hydrogen by:
Water vapour in air is splits into oxygen and hydrogen by:
Chemistry-General
Chemistry-
Which of the following is used in respiration process?
Which of the following is used in respiration process?
Chemistry-General
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Haemoglobin in the blood combines with the oxygen of the air to form..
Haemoglobin in the blood combines with the oxygen of the air to form..
Chemistry-General
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The main constituent of LPG is.....
The main constituent of LPG is.....
Chemistry-General
