Friday, April 21, 2017


1Which is the softest?Sodium
2What is used in preparing match sticks?Red phosphorus
3Which are the Actinides elements with atomic numbers?From 89 to 103
4What is the most suitable unit for expressing nuclear radius?Fermi
5What is the transfer of energy through matter from particle to particle?Conduction
6Chlorine acts as a bleaching agent only in the presence of which thing?Moisture
7Which pair of metals are supposed to constitute the internal core of the earth?Nickel and Iron
8What does Nail polish remover contain?Acetone
9Select the compound in which chlorine shows oxidation state + 7?HClO4
10Which substance is used to retard the setting action of cement?CaSO.2HO
11What is the composition of Nitrolim-a chemical fertilizer?Calcium carbide and nitrogen
12What are species containing same number of electrons called?Isoelectronic
13Rusting of iron is an example of which thing?Slow oxidation
14What is the natural source of hydrocarbon?Biomass
15Which is used as a fuel in Nuclear power stations in India?Thorium
16Which gas is absorbed during photosynthesis?CO2
17What is a mixture of potassium nitrate, powdered charcoal and sulphur called?Gun powder
18Which is a major constituent of Biogas?Methane
19Which ore contains both calcium and magnesium?Dolomite
20Who proposed the Atomic principle of matter?Dalton
21Which two basic forces are able to provide on attractive force between the two neutrons? 0 65292Gravitational and Nuclear
22When a bond is formed between two atoms, the energy so system will be-Decrease
23Element having atomic number 29 is related to -D-Block
24Which of the following particle being charged negatively?Electron
25Cathode rays are-Stream of electrons
26Which of the following element is most electronegative?Fluorine
27Which of the following determines the chemical properties of an element?Number of electrons
28The product equivalent weight and valiancy of an element is equal to-Atomic weight
29Orientation of atomic orbital is controlled by -Magnetic Quantum number
30Who is awarded by noble prize for the discovery is neutron?Chadwick
31An Element Atomic number 17 and mass number 36, then number of neutrons present in it-19
32Which of the following has maximum Mass?Neutron
33Atoms having equal number of protons but different number of Neutrons are called -Isotopes
34Atoms having same no of neutron but different no of electrons or protons are called -Isotones
35Nucleotide have same atomic number are called:Isotopes
36What is the value of Avogadro number?6.023 × 1023
37Which of the following is not a nucleon?Positron
38Chemical behavious of an element depends upon its-Number of electrons revolving around nucleus
39Atomic nuclei are composed of-Protons and neutrons
40The fundamental particles that composed on atom are-Proton, electron, Neutron
41What are the fundamental elements of an atom?Electron, Proton, Neutron
42Electronic configuration of Element Atomic number 20 is -2, 8, 8, 2
43Who discovered the element Atomic number 106?Seaborg
44Mark the compound which posses ionic, covalent and co-ordinate bond:NH4Cl
45Property of Ammonia is - 65292In its aqueous solution Red Litmus turns to Blue Litmus
46Paper of old books turns to brownish color due to -Oxidation of cellulose
47Which of the following is strongest oxidizing agent?Fluorine
48Positive oxidation state of oxygen is possible only in-OF2
49What is the oxidation number of Nickel in K4[Ni(CN)4]?Zero
50If Mg Cl2 contains one Millions of Mg2+ Ions, then how many Chloride Ions are present in it?Two million

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