On doubling the initial concentration, the half life of a reaction becomes half. The order of the reaction is

Amongst the following, identify the condensation polymer/s:
(A)Bakelite
(B) Teflon
(C) Melamine formaldehyde resin
(D) Nylon-2 nylon-6
(E) Buna-S
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In the formation of coordination complexes, if the inner \(d\) orbital \((n-1) d\) is used in hybridisation, the complex, is called an inner orbital or low spin or spin paired complex. And if it uses outer \(d\) orbital ( \(n d\) ) in hybridisation (like \(s p^3 d^2\) ), it is called outer orbital or high spin or spin free complex. The degeneracy of the \(d\) orbitals has been removed due to ligand electron-metal electron repulsions in the complex. This splitting of the degenerate levels due to the presence of ligands in a definite geometry is termed as crystal field splitting. For coordination complexes, the magnetic moment is determined by the number of unpaired electrons and is calculated by using the 'spin-only' formula, \(\mu=\sqrt{n(n+2)}\) where \(n\) is the number of unpaired electrons and \(\mu\) is the magnetic moment in units of Bohr magneton (BM). The coordination compounds are of great importance. These compounds are widely present in the mineral, plant and animal worlds and are known to play many important functions in the area of analytical chemistry, metallurgy, biological systems, industry and medicine.
Fe(II) octahedral complexes can show different 'spin only' magnetic moments for arrangements in the presence of weak and strong ligands. The 'spin only' magnetic moments of these complexes with weak and strong ligands, respectively, are

These structures represent which particular kind of halides :

Consider the following statements about the physical and chemical characteristics of interstitial compounds and identify the correct statements
(A) They have high melting points.
(B) They are very hard.
(C) They retain metallic conductivity.
(D) They are chemically very reactive.
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Aryl Halides are less reactive towards nucleophilic substitution reactions because of:
(A) Resonance Effect
(B) Stability of phenyl cation
(C) Presence of sp² Carbon attached to halogen
(D) Repulsion between benzene ring and incoming nucleophile
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"Arrange the following elements in decreasing order of their radii:
(A) La
(B) Pr
(C) Gd
(D) Yb
Choose the correct answer from the options given below:"

For the system of linear equations
x + y + z = 5000
6x + 7y + 8z = 35800
6x + 7y - 8z = 7000
the values of x, y and z are:

The value of differentiation of \(x^7+1\) with respect to \(x^6\) is

When phenol is treated with chloroform in the presence of \(NaOH\), the major product formed is ?

Answer the question on the basis of passage given below :
Adsorption is a surface phenomenon which can be expressed by means of an empirical relationship know as Freundlich Adsorption isotherm. The relationship given by \(\frac{x}{m} = Kp^{\frac{1}{n}}\ (n > 1)\)
x = Mass of the gas adsorbed
m = Mass of adsorbent
p = Pressure at which adsorption takes place
K and n are constant
When water is the dispersion medium, the colloidal system is called:

Study the following figure and answer the questions:


Choose the correct statements from the following.
A. tRNA has an anticodon loop
B. tRNA look like a inverted J
C. There are no tRNAs for stop codons
D. tRNA has clover-leaf like secondary structure
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If the intensity of incident radiation on metal is doubled, the kinetic energy of electrons emitted would be