Advertisements
Advertisements
प्रश्न
Write the names of the elements present in the:-
Glucose
Advertisements
उत्तर
Glucose : Carbon, hydrogen, oxygen.
APPEARS IN
संबंधित प्रश्न
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
Fill in the blank
An ion with positive charge is called ______
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Name two particles found inside the nucleus. What are they collectively called ?
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
How did Neils Bohr visualise the atom ?
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
Write the full form of IUPAC.
How many times is a proton heavier than an electron?
Which has more atoms, 50 g of aluminium or 50 g of iron ? Illustrate your answer with the help of calculations.
(Atomic masses : Al = 27 u ; Fe = 25 u)
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Draw the diagrams representing the atomic structures of the following: Neon
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
A compound containing one atom of carbon and two atoms of oxygen is ______.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Compound
Does the solubility of a substance change with temperature? Explain with the help of an example.
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
Atoms have a radius of the order ______.
