Welcome to your Chemistry SSC 50 MCQ SET:-4
Date:- 24/12/2024
1.
Isopentane, also called __, is a branched-chain saturated hydrocarbon with the chemical formula 𝐶5 H12 .
2.
Which of the following is the correct sequence of alkaline earth metals, according to atomic number ?
3.
Which of the following is an organic compound with the formula C6H4Cl2 that is used as a fumigant insecticide to control cloth moths?
4.
Which chemical compound, with the chemical formula (CH3CH2Cl), is used as a blowing agent in foamed plastics?
5.
Which soft metal in group 1 of the periodic table tarnishes within a few seconds of exposure to air?
6.
Identify an element that has atomic number 7.
7.
The number of elements known at the time of Russian chemist Dmitri Ivanovich Mendeleev was:
8.
Which d-block element in the periodic table is represented by the Greek symbol ‘alpha’ and the metallic ‘rays’ ?
9.
Which German chemist was the first to show a graphical representation of the periodicity of an atomic volume plotted against atomic weight?
10.
Find the correct chemical formula of nitromethane.
11.
Identify whether the given statements about p-block elements are correct or incorrect.
12.
Which of the following statements is NOT correct regarding hydrocarbons?
13.
Which functional group compound is obtained by the reaction of an oxoacid with a hydroxyl compound, such as alcohol or phenol?
14.
Which of the following group elements are called chalcogens?
15.
With symbols having their usual meanings, which one among the following is used as the standard for defining atomic mass unit?
16.
Propane and butane are the main components of which of the following gases?
17.
The behaviour of lithium is similar to that of magnesium. This sort of similarity is commonly referred to as:
18.
What is the bond angle (in degrees) in the structure of a benzene molecule?
19.
Which of the following is an example of monosaccharides?
20.
Which chemical element of Group 18 of the periodic table is produced by the natural radioactive decay of uranium in soils and rocks ?
21.
What was the symbol Henry Moseley used for denoting atomic number?
22.
Which element of the boron family has a high boiling point, making it ideal for recording temperatures that would vaporise a thermometer?
23.
Identify the element one that does NOT belong to Group 1 of the Modern Periodic Table.
24.
Which of the following options are all transition metals?
25.
In the format of the IUPAC name of the organic compound, the term ‘Root’ is used to represent:
26.
In which group of the Periodic Table will you put the elements with electronic configuration [He]2𝑠2 2p6 ?
27.
Which of the following elements is a member of the actinide series?
28.
Identify the method that is NOT used to purify organic compounds.
29.
Which of the following is NOT a property of graphite?
30.
The law of octaves asserts that every eighth element has comparable properties when grouped in increasing order of their atomic masses and is also known as:
31.
Identify the last element from the fifth period.
32.
Compounds with exactly two double carbon – carbon bonds are known as __.
33.
Which is the soft, malleable and silvery-yellow metal with atomic number 59 in the lanthanide series ?
34.
A diagonal relationship is found between which pair of the following elements ?
35.
How many carbon and hydrogen atoms are there in Propane, respectively?
36.
Which s-block element is a silvery-white metal that is used in an alloy with copper or nickel to make gyroscopes, springs, electrical contacts, spot-welding electrodes, and non-sparking equipment ?
37.
What will be the atomic number of an element X which is placed in period 2 and group 17 ?
38.
Which element of group 13 has the atomic number 113 and its electronic configuration is [Rn] 5f146d107s27p1?
39.
In which year did John Alexander Newlands propound a new concept of the ‘Law of Octaves’ proposing the periodicity of chemical elements arranged in order of atomic weight?
40.
Which radioactive element with atomic number 43 in the modern periodic table is unstable, and the half-lives of all its isotopes are relatively short, from 4.2 million years to 5.0 s?
41.
Which group was given the name ‘paraffin’ earlier?
42.
What is the name of the compound having the formula CH3CH2OH ?
43.
What is the name of the 87th element on the periodic table that has no known biological role because it has a half-life of only 22 minutes ?
44.
What are the elements in group zero commonly known as?
45.
Identify the correct statement with respect to unsaturated hydrocarbons.
46.
What is the atomic number of Bohrium which is named after physicist Niels Bohr, one of the founders of quantum theory ?
47.
Which of the following is NOT an allotrope of carbon?
48.
Out of the following metals, choose the odd one out on the basis of their place in the periodic table.
49.
Identify the correct statement about Newlands’ law of octaves.
50.
The three-carbon molecules broken down from six-carbon molecules of glucose during the first step in the process of nutrition in all organisms is called:
