A charged particle carrying charge 1 μC is moving with velocity \(\begin{array}{l}(2\hat{i}+3\hat{j}+4\hat{k})ms^{-1}\end{array} \). If an external magnetic field of \(\begin{array}{l}(5\hat{i}+3\hat{j}-6\hat{k})\times... View Article
The magnetic field of a plane electromagnetic wave is \(\begin{array}{l}\vec{B}= 3 \times 10^{-8}sin\left [ 200\pi (y+ct) \right ]\hat{i}T\end{array} \) where... View Article
July 4th, 2021, PIB:- Download PDF Here TABLE OF CONTENTS 1. Bamboo Oasis on Lands in Drought (BOLD) 2. The... View Article
A GIAHS is a living, evolving system of human communities in an intricate relationship with their territory, cultural or agricultural... View Article
UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 04th Jul 2021. Important news and... View Article
Deficiency of vitamin K causes: a. Cheilosis b. Increase in blood clotting time c. Increase in the fragility of RBCs... View Article
Match List-I and List-II: List-I List-II (a) Be (i) treatment of cancer (b) Mg (ii) extraction of metals (c) Ca... View Article
The oxidation states of nitrogen in NO, NO2, N2O and NO3– are in the order of a. NO2 > NO3–... View Article
In the reaction of hypobromite with amide, the carbonyl carbon is lost as: a. HCO3– b. CO32– c. CO2 d.... View Article
In the following molecule: The hybridisation of Carbon a, b and c respectively are: a. sp3, sp2, sp2 b. sp3,... View Article
The first ionization energy of magnesium is smaller as a compound to that of elements X and Y but higher... View Article
An organic compound “A” on treatment with benzene sulphonyl chloride gives compound B. B is soluble in dil. NaOH solution.... View Article
Consider the given reaction, percentage yield of: a. A > C > B b. B > C > A c.... View Article
Main Products formed during a reaction of 1-methoxy naphthalene with hydroiodic acid are: Answer: (d) hence the answer is d
Match List-I with List-II: List-I (Class of Chemicals) List-II (Example) (a) Antifertility drug (i) Meprobamate (b) Antibiotic (ii) Alitame (c)... View Article
Match List-I with List-II: List-I List-II (a) Mercury (i) Vapour phase refining (b) Copper (ii) Distillation Refining (c) Silicon (iii)... View Article
a. SiO2 b. Na2O c. Mn3O4 d. MgO Answer: (c) Mn3O4 is paramagnetic due to the presence of unpaired electrons.
a. positive and negative b. negative and negative c. negative and positive d. positive and positive Answer: (c) CdS →... View Article
0.01 moles of a weak acid HA (Ka = 2.0 × 10–6 ) is dissolved in 1.0 L of 0.1... View Article
In the above reaction, 3.9 g of benzene on nitration gives 4.92 g of nitrobenzene. The percentage yield of nitrobenzene... View Article
