Aqueous solution of which of the following salts will not contain ions with the electronic configuration $$1s^2 2s^2 2p^6 3s^2 3p^6$$?
JEE WhatsApp Group
Sign in
Please select an account to continue using cracku.in
↓ →
JEE WhatsApp Group
Join Our JEE Preparation Group
Prep with like-minded aspirants; Get access to free daily tests and study material.
Aqueous solution of which of the following salts will not contain ions with the electronic configuration $$1s^2 2s^2 2p^6 3s^2 3p^6$$?
Login to view the detailed solution.
The following statements concern elements in the periodic table. Which of the following is true?
Login to view the detailed solution.
The bond angle H-X-H is the greatest in the compound:
Login to view the detailed solution.
.webp)
Initially, the root-mean-square (RMS) velocity of $$N_2$$ molecules at certain temperature is u. If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the new RMS velocity will be:
Login to view the detailed solution.
If 100 mole of $$H_2O_2$$ decompose at 1 bar and 300 K, the work is done (kJ) by one mole of $$O_2(g)$$ as it expands against 1 bar pressure is:
$$2H_2O_2(l) \rightleftharpoons 2H_2O(l) + O_2(g)$$
$$(R = 8.3$$ J K$$^{-1}$$ mol$$^{-1})$$
Login to view the detailed solution.
A solid XY kept in an evacuated sealed container undergoes decomposition to form a mixture of gases X and Y at temperature T. The equilibrium pressure is 10 bar in this vessel. $$K_p$$ for this reaction is?
Login to view the detailed solution.
.webp)
The volume of 0.1 M strong dibasic acid sufficient to neutralize 1 g of a base that furnishes 0.04 mole of $$OH^-$$ in aqueous solution is:
Login to view the detailed solution.
What is the commercial name for calcium oxide?
Login to view the detailed solution.
Identify the reaction which does not liberate hydrogen
Login to view the detailed solution.
.webp)
Assertion: Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity.
Reason: Hybridization of carbon in diamond and graphite are sp$$^3$$ and sp$$^2$$ respectively.
Login to view the detailed solution.
Sodium extract is heated with concentrated $$HNO_3$$ before testing for halogens because:
Login to view the detailed solution.
Consider the reaction sequence below:
X is:
Login to view the detailed solution.
.webp)
Which one of the following substances used in dry cleaning is a better strategy to control environmental pollution?
Login to view the detailed solution.
An aqueous solution of a salt $$MX_2$$ at certain temperature has a Van't Hoff factor of 2. What is the degree of dissociation for this solution of the salt?
Login to view the detailed solution.
Oxidation of succinate ion produces ethylene and carbon dioxide gases. On passing 0.2 Faraday electricity through an aqueous solution of potassium succinate, what is the total volume of gases (at both cathode and anode) at STP (1 atm and 273 K)?
Login to view the detailed solution.
Identify the correct statement:
Login to view the detailed solution.
The rate law for the reaction below is given by the expression k[A][B]
$$A + B \to$$ Product
If the concentration of B is increased from 0.1 to 0.3 mol, keeping the value of A at 0.1 mol, the rate constant will be:
Login to view the detailed solution.
Gold numbers of some colloids are Gelatin: 0.005 - 0.01, Gum Arabic: 0.15 - 0.25, Oleate: 0.04 - 1.0, Starch: 15 - 25. Which among the following is a better protective colloid?
Login to view the detailed solution.
_1.webp)
Extraction of copper by smelting uses silica as an additive to remove.
Login to view the detailed solution.
Identify the incorrect statement:
Login to view the detailed solution.
Which of the following are the transition metal ions responsible for colour in ruby and emerald respectively?
Login to view the detailed solution.
Which of the following is an example of homoleptic complex?
Login to view the detailed solution.
Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with $$HBF_4$$. Which of the following conditions is correct about this reaction?
Login to view the detailed solution.
Which one of the following reagents is not suitable for the elimination reaction?
Login to view the detailed solution.
Bromination of cyclohexene under conditions given below yields:
Login to view the detailed solution.
The correct statement about the synthesis of erythritol $$(C(CH_2OH)_4)$$ used in the preparation of PETN is
Login to view the detailed solution.
The N which contributes least to the basicity of the compound is:
Login to view the detailed solution.
Which of the following polymers is synthesized using a free radical polymerization technique?
Login to view the detailed solution.
Which of the following is a bactericidal antibiotic?
Login to view the detailed solution.
Observation of "Rhumann's purple" is a confirmatory test for the presence of:
Login to view the detailed solution.
Educational materials for JEE preparation
Share