Question 1 :
Which of the following pairs show reverse properties on moving along a period from left to right and from top to down in a group?

Question 2 :
In a double bond connecting two atoms there is a sharing of:

Question 3 :
What is the maximum number of electrons present in the main energy level in which the 'g' subshell appears for the first time?

Question 4 :
The two electrons have the following sets of quantum numbers.<br/>X: 3, 2, -2, +1/2<br/>Y: 3, 0, 0, + 1/2<br/>What is true of the following?

Question 5 :
The ionisation energy for the H atom is 13.6 eV then the requried energy in eV to excite it from the ground state to next higher state will be (in eV)&#160;:

Question 6 :
Approximate atomic weight of an element is 26.89 . If its equivalent weight is 8.9 , the exact atomic weight of element would be :- -

Question 7 :
Classify which of the following pair is a compound and a mixture?

Question 9 :
Which of the following molecule possesses polar and nonpolar covalent bond ?

Question 10 :
Identify the correct statement from below, concerning the structure of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea7c95a6f3020298ca137d7">

Question 11 :
Assertion: A vacuum is a space from which almost all gas has been removed. Reason: A vacuum is produced by pumping out all the air and other gases.<br/><div>Choose the correct option.</div>

Question 12 :
If pressure of a gas contained in a closed vessel is increased by $0.4$% when heated by ${1}^{o}C$ its initial temperature must be:

Question 13 :
Write true or false for the following statements:<br>The force of attraction between the constituent particles in any form of matter is known as inter - molecular force.

Question 15 :
When sodium acetate is added to acetic acid, the degree of dissociation of acetic acid:

Question 21 :
{tex}\mathrm{AlF_{3}}{/tex} is soluble in {tex}\mathrm{HF}{/tex} only in presence of {tex}\mathrm{KF}{/tex}. It is due to the formation of

Question 22 :
<span class="wysiwyg-font-size-small">A white solid imparts a violet colour to a Bunsen flame. On being heated with concentrated $H_2SO_4$, the solid gives violet vapours that turns starch paper blue. The salt may be :</span><br>

Question 23 :
The compound that does not give a blue colour in Lassaigne's test is

Question 25 :
Acetylene is prepared industrially by passing electric discharge through graphite electrodes in the atmosphere of [CPMT 1985]

Question 28 :
How many unit cells are present in a cube-shaped ideal crystal of NaCl of mass 1.00 kg?&#160;<div>[Atomic masses of Na and Cl are 23 g/mol and 35.5 g/mol respectively.]<br/></div>

Question 29 :
The chemical reaction, $2AgCl_{(s)} + H_{2(g)} \rightarrow 2HCl_{(aq)} + 2Ag_{(s)}$ taking place in a galvanic cell is represented by the notation :

Question 30 :
In a galvanic cell, the salt bridge<br>(i) does not participate chemically in the cell reaction<br>(ii) stops the diffusion of ions from one electrode to another<br>(iii) is necessary for the occurrence of the cell reaction<br>(iv) ensures mixing of the two electrolytic solutions.<br>

Question 31 :
Based on the following reaction and rate data:<br/>$\displaystyle&#160;A\left( g \right) +B\left( g \right) \rightarrow products$<div><br/><table class="wysiwyg-table"><tbody><tr><td>Experiment</td><td>$[A]$ mol/L</td><td>$[B]$ mol/L</td><td>Initial Rate (M/s)</td></tr><tr><td>1</td><td>0.060</td><td>0.010</td><td>0.040</td></tr><tr><td>2</td><td>0.030</td><td>0.010</td><td>0.040</td></tr><tr><td>3</td><td>0.030</td><td>0.020</td><td>0.080</td></tr></tbody></table>What is the order of the reaction&#160;with respect to $A$?</div>

Question 32 :
The rate of a certain&#160;reaction at different times are as follows:<br/><table class="wysiwyg-table"><tbody><tr><td>Time</td><td>rate ($mole$ $lit^{-1}\sec^{-1}$)</td></tr><tr><td>I) 0</td><td>a) $2.8 \times 10^{-2}$</td></tr><tr><td>II) 10</td><td>b) $2.78\times 10^{-2}$</td></tr><tr><td>III) 20</td><td>c) $2.81\times 10^{-2}$</td></tr><tr><td>IV) 30</td><td>d) $2.79\times 10^{-2}$<br/></td></tr></tbody></table>The correct matching is:<br/>

Question 35 :
When a mixture of diborane and ammonia is heated, the final product is:

Question 36 :
The compound formed when boron replaces silicon in the three dimensional lattice are called:

Question 39 :
Cumene process is the most important commercial method for the manufacture of phenol. Cumene is

Question 40 :
Among the following compounds nitrobenzene , benzene, aniline and phenol, the strongest basic behaviuor&#160; in acid medium is exhibited by :

Question 42 :
Which of the following sets of examples and geometry of the compounds is not correct?

Question 50 :
The pH value of a solution in which a polar amino acid does not migrate under the influence of electric field is called: