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Jaiyush19
Jaiyush19
@jaiyush19
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Joined: Sep 10, 2021
Last seen: Jul 13, 2023
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Topics: 2159 / Replies: 16
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Topic
Which of the following is an autotroph? Green plant or Man.
4 years ago
Forum
Life Processes
Replies: 0
Views: 70
Topic
Which of the following type of energy is used by living organisms to perform vital life processes? Kinetic energy, Chemical energy, Potential energy, Nuclear energy
4 years ago
Forum
Life Processes
Replies: 0
Views: 89
Topic
Which is the basic requirement of living organisms for obtaining energy?
4 years ago
Forum
Life Processes
Replies: 0
Views: 72
Topic
A non-metal X which is the largest constituent of air combines with hydrogen when heated in the presence of iron as catalyst to form a gas Y. When gas Y is treated with sulphuric acid, it forms a compound Z which is used as a chemical fertiliser.
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 179
Topic
The non-metal A is an important constituent of our food and most of the fuels around us. A forms two oxides B and C. Oxide B is poisonous whereas oxide C causes global warming.
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 129
Topic
Write the names and symbols of two very reactive metals belonging to group 1 of the periodic table. Explain by drawing electronic structure, how either one of the two metals reacts with a halogen.
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 136
Topic
Atoms of eight elements A, B, C, D, E, F, G, and H have the same number of electron shells but different number of electrons in their outermost shells. It was found that elements A and G combine to form an ionic compound. This ionic compound is added...
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 167
Topic
Find the neutral atom in the periodic table which has the same number of electrons as K^+ and Cl. What is this number?
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 137
Topic
The elements A, B and C belong to groups 1, 14 and 17 respectively of the periodic table. (a) Which two elements will form a covalent compound? (b) Which two elements will form an ionic compound?
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 108
Topic
The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols):
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 138
Topic
An element X from group 2 of the periodic table reacts with an element Y from group 17 to form a compound. (a) What is the nature of the compound formed? (b) State, whether the compound formed, will conduct electricity or not.
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 130
Topic
An element A from group 14 of the periodic table combines with an element B from group 16. (i) What type of chemical bond is formed? (ii) Give the formula of the compound formed.
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 137
Topic
A metal X is in the first group of the periodic table. What will be the formula of its oxide?
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 130
Topic
An element X from group 2 reacts with element Y from group 16 of the periodic table. (a) What is the formula of the compound formed? (b) What is the nature of bond in the compound formed?
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 127
Topic
The elements A, B, C and D belong to groups 1, 2, 14 and 17 respectively of the periodic table. Which of the following pairs of elements would produce a covalent bond?
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 112
Topic
An element A has an atomic number of 6. Another element B has 17 electrons in its one neutral atom. (a) n which groups of the periodic table would you expect to find these elements?
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 90
Topic
An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting. (a) How many electrons would be there in the outermost shell of element X? (b) To which group of the periodic table does the element X belong?
4 years ago
Forum
Periodic Classification Of Elements
Replies: 0
Views: 115
Topic
N2(g) + 3H2(g) ⇌ 2NH3(g), K1 (2) N2(g) + O2(g) ⇌ 2NO(g), K2 (3) H2(g) + 1/2O2(g) ⇌ H2O(g), K3 The equation for the equilibrium constant of the reaction
4 years ago
Forum
Equilibrium
Replies: 0
Views: 141
Topic
The standard state Gibb's free energy change for the isomerisation reaction cis-2-pentene ⇌ trans-2-pentene is -3.67 kJ mol^-1 at 400 K. If more trans-2-pentene is added to the reaction vessel
4 years ago
Forum
Equilibrium
Replies: 0
Views: 163
Topic
Some inert gas is added at constant volume to the following reaction at equilibrium NH4HS(s) ⇌ NH3(g) + H2S(g) Predict the effect of adding the inert gas:
4 years ago
Forum
Equilibrium
Replies: 0
Views: 106
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