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Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O_2 and 2 g H_2 confined in a total volume of one litre at 0°C is : [Given R = 0.082 L atm mol^-1K^-1, T = 273 K]
The incorrect statement among the following for sigma- ($\sigma$) and pi- ($\pi$) bonds formed between two carbon atoms is:
The compound that forms a linear polymer due to hydrogen bonding is:
The color code of a resistance is given below. The values of resistance and tolerance, respectively, are
The correct order of increasing thermal stability of $\text{K}_2\text{CO}_3$, $\text{MgCO}_3$, $\text{CaCO}_3$ and $\text{BeCO}_3$ is:
Exon part of m-RNAs have code for:
If the main axis of a diatomic molecule is z, then the molecular orbital $p_x$ and $p_y$ overlap to form which of the following orbital:
In which of the following pairs, both the species are not isostructural?
Which pair of ions among the following list do not constitute an iso-electronic pair?
The correct increasing order of bond angles in the following species is:
The correct order of increasing bond length of $\text{C-H}$, $\text{C-O}$, $\text{C-C}$ and $\text{C=C}$ is:
Identify the incorrect statement among the following:
A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. The magnetic field at the centre of the solenoid is : ($\mu_0 = 4\pi \times 10^{-7} \text{ T m A}^{-1}$)
The compound that gives a pair of enantiomorphs is: (en = NH₂CH₂CH₂NH₂)
Which of the following species contains equal number of $\sigma$ and $\pi$ bonds?
Decreasing order of stability of $\text{O}_2$, $\text{O}_2^-$, $\text{O}_2^+$ and $\text{O}_2^{2-}$ is:
Match the oxide given in Column-I with its property given in Column-II: **Column-I** (i) $Na_2O$ (ii) $Al_2O_3$ (iii) $N_2O$ (iv) $Cl_2O_7$ **Column-II** (a) Neutral (b) Basic (c) Acidic (d) Amphoteric Which of the following options is correct?
Considering the state of hybridisation of carbon atoms, find out the molecule among the following which is linear.
Arrange the following species in increasing order of their dipole moments: $NH_3, NF_3, BF_3, H_2O$
In which of the following pairs of molecules/ions, the central atoms have $sp^2$ hybridization?