1.
What is the difference between two electrons in an orbit?
2.
Who discovered the neutron and its properties?
3.
The process of change from liquid to gas is called _____ ?
4.
Which of the following scientists discovered the electron in 1897?
5.
How many protons are there in a lithium nucleus?
6.
The first electron shell which is the nearest to the nucleus never holds more than 'n' electrons, where 'n' is equal to:
7.
Atoms of same element having different mass numbers are called…………. ?
8.
A drop of food colouring spreading out in a cup of water is an example of:
9.
Which of the following is false?
10.
Which of the following statement is not correct with respect to a mixture?
11.
Atoms of different elements with different atomic numbers, which have the same atomic mass, are known as-
12.
An emulsion is a colloidal solution of
13.
Which of the following statement is not correct with respect to rutherford's atomic model
14.
What is the atomic number of chromium?
15.
Who among the following is considered as the 'Father of Modern Atomic Theory'?
16.
Which among the following is false about alpha particles?
17.
In the context of isotopes of any element, which of the following statements is not correct?
18.
In any shell the difference between two electron to be done by ?
19.
Name the law in Physics which states that equal volume of all gases under the same conditions of temperature and pressure contain equal number of molecules.
20.
Which of the following is an example of colloidal solution of liquid in solid?
21.
In 1808 which of the following proposed that the combination of two or more different elements form compounds?
22.
Alpha particles are………. ?
23.
All isotopes of the same element have --------?
24.
How many types of isotopes does Scandium have?
25.
Which of the following elements is a metalloid?
26.
The existence of isotopes was first suggested in 1913 by the radiochemist .........
27.
Electron was discovered in the year 1897 by___
28.
Atomic mass of Oxygen is 16 and atomic number is 8. What is the mass (in grams) of 2 moles of oxygen gas?
29.
In 1904 who discovered plum-pudding model of atom, according to which positive charge is spread over a sphere and electrons are embedded to the positive charge as resins are scattered in plum-pudding?
30.
One mole of an ideal gas occupies volume of ............ litre at 237 k temperature and 1 atm pressure.
31.
Which among the following is present inside the nucleus of an atom?
32.
–––––– are homogeneous mixtures of two or more components ?
33.
Which of the following are metalloids?
34.
Which of the following is a heterogeneous mixture?
35.
What is the mass of 4 Moles of aluminium atoms?
36.
Which of the following changes CANNOT be reversed?
37.
The process of transformation of a substance in a gaseous state into a liquid state due to change in pressure or temperature of the substance is called :
38.
Which of the following formula is correct?
39.
Which of the following process changes liquids directly into gases (vapour)?
40.
Which of the following property of a proton cannot change while it moves freely in magnetic field?
41.
Barium loses………. electrons to achieve noble gas electronic configuration?
42.
What happens when one s and one p orbital is hybridized?
43.
Which one of the following is not a compound?
44.
Using which of the following processes can one separate a solute from its solution?
45.
Which among the following is NOT true about a solution and the solute concerned?
46.
Which one of the following can be categorised as a solution?
47.
Osmosis is diffused conduction of ..............
48.
Electrons move around the nucleus in..........…. motion.
49.
Atoms of different elements with different atomic numbers, having same mass number is known as ––––.
50.
Which of the following is a chemical change?
