List of top Chemistry Questions

Bleaching powder and bleach solution are produced on a large scale and used in several household products. The effectiveness of bleach solution is often measured by iodometry. Bleaching powder contains a salt of an oxoacid as one of its components. The anhydride of that oxoacid is
Which of the following on thermal decomposition yields a basic as well as acidic oxide ?
Which one of the following compounds is an antifertility drug?
Which one of the following has incomplete octet?
Which one of the following is least basic?
Which one of the following options is correct?
Which of the following compounds can be detected by Molisch's test :
Which of the following compounds are antiaromatic
Which is the most acidic compound among the following?
Which is correct example of condensation polymer?
Which gas is liberated when $ A{{l}_{4}}{{C}_{3}} $ is hydrolysed?
What is the product formed when acetylene reacts with hypochlorous acid ?
Total number of metal atoms per unit cell in a face-centred cubic lattice is
The substance used as froth stabilisers in forth-floatation process is
The shape of the ammonia molecule is
The reddish brown gas produced by heating $ KCl $ with $ K_2Cr_2O_7 $ (solid) and conc. $ H_2SO_4 $ is
The reaction, $2H_{2}O_{2} \to 2H_{2}O +O_{2} ; $ shows that $H_{2}O_{2}$
The raw material for Raschig process is
The order of osmotic pressure of three equimolar aqueous solutions of $CaCl_{2}, NaCl$ and $C_{6}H_{12}O_{6}$ (glucose) is
The order of basicity of the compounds is
The molecule having smallest bond angle is :
The half life of a radioactive nucleus is $50$ days. The time interval (t$_2-t_1$) between the time t$_2$ when $\frac{2}{3}$ ot it has decayed and the time $t_1$, when $\frac{1}{3}$ of it had decayed is
The geometry of ammonium ion is
The formation of molecular complex $BF_3 ??NH_3$ results in a change in hybridization of boron
The following sets of quantum numbers represent four electrons in an atom. (i) $n=4, \,l= 1$ $\quad$$\quad$(ii) $n=4,\, l=0$ (iii) $n = 3,\,l=2$$\quad$$\quad$ (iv) $n = 3,\,l= 1$ The sequence representing increasing order of energy, is