Scribd
Upload
81 views4 pages

GK Science One Liners

1. The document provides 30 chemistry one-liners with brief explanations about various topics including the properties of isotopes, allotropes, ionic bonds, atomic structure, periodic table, and more. 2. Key points covered include that isotopes and allotropes have the same chemical properties, ionic bonds form through the complete transfer of electrons between atoms, and the hardness of diamonds is due to their unique carbon atomic structure. 3. Additional topics summarized are that cathode rays can be deflected by both magnetic and electric fields, and that 20 synthetic elements have been created in a laboratory that do not occur naturally on Earth.

Uploaded by

anil gavare
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
81 views4 pages

GK Science One Liners

1. The document provides 30 chemistry one-liners with brief explanations about various topics including the properties of isotopes, allotropes, ionic bonds, atomic structure, periodic table, and more. 2. Key points covered include that isotopes and allotropes have the same chemical properties, ionic bonds form through the complete transfer of electrons between atoms, and the hardness of diamonds is due to their unique carbon atomic structure. 3. Additional topics summarized are that cathode rays can be deflected by both magnetic and electric fields, and that 20 synthetic elements have been created in a laboratory that do not occur naturally on Earth.

Uploaded by

anil gavare
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 4

www.byjusexamprep.

com

GK and Science One Liners PDF | Daily Study Plan: Day 1


(Chemistry)
1: ‘Isotonic solution’ refers to those two solutions which have- Same Osmotic pressure
2. Name the metal which is generally mixed with gold while making the ornaments -
Copper
3. Which law states that at a constant temperature, the volume of a definite mass of a
gas is inversely proportional to pressure - Boyle’s Law
4. Gamma rays were discovered by - Paul Villard
5. J J Thomson is credited with the discovery of - Electrons
6. Which equation explains the dual nature of electron - De-Broglie Equation
7. The watermelon model was given by - Thomson’s model
8. Charle’s Law describes the relation between - Volume and Temperature
** Charles' law describes the relationship between temperature and volume at a
constant pressure. Increasing the temperature of a volume of gas causes individual gas
molecules to move faster.
9. Who out classified the elements into metals and non-metals - Lavoisier
10. NaCl is formed by which bond - Ionic or electrovalent bond
11. Hair cream, milk are the examples of - Emulsion
12. Zeman’s effect is related with - Atomic Spectra
13. Which bond is formed by the complete transfer of one or more electrons from one
atom to another atom - Ionic Bond
14. What is the number of periods in the modern periodic table? - 7 periods
15. The atomic number of an element is the number of - Electrons or protons
16. Proton/Neutron/Electron which of the following has the greatest mass? - Neutron
17. The hardest substance available on earth is ____- Diamond
**The hardness of a diamond is due to the structure of its carbon atoms. In diamond,
each carbon atom is bonded to four other carbon atoms which form giant, three-
dimensional structure.**
18. Rutherford’s scattering experiment proved the presence of - Nucleus in atoms
19. The molecular weight of a substance can be calculated by measuring - Vapour
Density
20. The chemical behaviour of an atom is determined by its - Atomic number because
that indicates the number of electrons
21. Isotopes and Allotropes have the same chemical properties
22. Rusting of iron is a - Chemical Change
A chemical change is a change of materials into other, new materials with different
properties and one or more new substances are formed. E.g. Iron Rust
23. An exothermic reaction is one which is - Accompanied by liberation of heat
24. Pencil “lead” is made up of - Graphite
25. What is the Molar mass of Benzene? - 78.11 g·mol−1
26. What is the atomic number of Iron? - 26
27. Cathode rays can be deflected by – Both magnetic and electric fields
**J. J. Thomson showed that cathode rays were composed of a previously unknown
negatively charged particle, which was later named the electron. Cathode ray tubes
(CRTs) use a focused beam of electrons deflected by electric or magnetic fields to create
the image on a television screen.**

2
www.byjusexamprep.com

28. Which was first human-made plastic - Celluloid


29. When a piece of quicklime is dipped in water, it gives bubbles. This bubbling is due to
- the escape of water vapours
30. What is the number of synthetic elements in Periodic Table - 20 Elements
**Chemical element that does not occur naturally on Earth, and can only be created
artificially. So far, 20 synthetic elements have been created (those with atomic numbers
99–118).**

You might also like