List of practice Questions

The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines:
The number of permutations of taking all letters and keeping the vowels of the words in the odd places is
The number of ordered pairs (x, y) satisfying $ {3^{x} . 5^{y} = 75}$ and $ {3^{y} . 5^{x} = 45}$ is
The number of P-O-H and P-H bonds in orthophosphorus acid molecule are relatively
The number of P-O-H links in orthophosphoric acid molecule is
The number of natural numbers less than $1000$ in which no two digits are repeated is
The number of nephrons in a kidney is equal to
The number of neutrons in 1.8 g of water will approximately be
The number of numbers consisting of four different digits that can be formed with the digits 0, 1, 2, 3 is :
The number of isomers ketones with formula $ {C_6H_{12}O}$ are
The number of molecules in 100m L of 0.02N $H_2SO_4$ is
The number of moles of $ {H_2}$ in 0.224 litre of hydrogen gas at STP (273 K, 1 atm) is :
The number of half filled orbitals in the valence shell of halogens is
The number of integral terms in the expansion$\left(\sqrt{3}+\sqrt[8]{5}\right)^{256}$
The number of isomers exhibited by $[Cr(NH_3)_3Cl_3]$ is
The number of DNA strands in chromosome at G-stage of cell cycle is
The number of ether metamers represented bymolecular formula $C_4H_{10}O$ is
The number of diagonals of a polygon of $30$ sides is
The number of divisors of $9600$ including $1$ and $9600$ are
The number of capital letters such as $A, B, C, D$ ... which are not laterally inverted by a plane mirror?
The number of chromosomes in the shoot tip cells of a maize plant is $20$. The number of chromosomes in the microspore mother cells of the same plant shall be
The number of $Cl^{-}$ ions required to form ccp lattice of NaCl structure are
The number of atoms in a unit cell of a cubic crystal system is 2, the arrangement of atoms is
The number of atoms in the ring structure of pyranoses are Carbon$\quad$ Oxygen
The number of atoms present in 0.1 mole of $P_4$(at. mass = 31) are