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Question 3:

What are the different physical properties of non-metals?

In simple gas turbine cycle following data are given: Isentropic efficiency of compressor = 80%. Turbine isentropic efficiency = 100%. All shafts have mechanical efficiency = 90%. Turbine output shaft is coupled to compressor and generator. Pressure ratio of compression = 3 : 1.

Maximum turbine temperature = 1000 K. Ambient condition 1 bar, 327 K. Net specific power output from the turbine is ____ KJ/kgk. Take generator efficiency = 95%, cp = 1.005 kJ/kgk.

1. 87.564

The molecular formula of diphenyl methane,



How many structural isomers are possible when one of the hydrogen is replaced by a chlorine atom?

What is meant by the term 'coordination number ?

What is the coordination number of atoms

(a) in a cubic close - packed structure ?

(b) in a body - centred cubic structure ?

Column-I contains binary liquid mixture in ether and column-II contains method used for separation.



$\begin{array}{cccc}& \text{Column-I}& & \text{Column-II}\\ \text{P.}& \text{Aniline + N-methyl aniline}& \text{1.}& \text{i. Addition of}\left[Ag\right(N{H}_3{)}_2{]}^{+}\\ & & & \text{ii. Filteration}\\ & & & \text{iii. Treating precipitate with dil.}HCl\\ \text{Q.}& \text{Phthalimide + Benzyl amine}& \text{2.}& \text{i. Addition of}{C}_6{H}_{5}S{O}_{2}Cl+aq.NaOH\\ & & & \text{ii. Treating aq. layer with dil.}HCl\\ & & & \text{and distilled over}NaOH\\ \text{R.}& \text{Propan-1-ol + Propanone}& \text{3.}& \text{i. Addition of}NaOH\\ & & & \text{ii. Treating aqueous with}HCl\\ \text{S.}& \text{But-1-yne + But-2-yne}& \text{4.}& \text{i. Addition of saturated}NaHS{O}_3\\ & & & \text{ii. Filteration}\\ & & & \text{iii. Heating precipitate with dil.}HCl\end{array}$



Select the correct option considering column-I and column-II.

The temperature above which gas cannot be liquefied by application of pressure alone is

The noble gases have closed-shell electronic configuration and are monoatomic gases used normal conditions. The low boiling points of the lighter noble gases are due to weak dispersion forces between the atoms and the absence of other interatomic interactions.



The direct reaction of xenon with fluorine leads to a series of compounds with oxidation number +2, +4 and +6. $Xe{F}_4$ reacts violently with water to give $Xe{O}_3$. The compounds of xenon exhibit rich stereochemistry and their geometries can be deduced considering the total number of electron pairs in the valence shell.



The structure of $Xe{O}_3$ is

The correct expression of $K_c$ for $2HI\left(g\right)\rightleftharpoons H_2\left(g\right)+I_2\left(g\right)$ is

The systemic name for an element with atomic number (Z = 118) is:

In which pair most efficient packing is present?

(a) hcp and bcc (b) hcp and ccp

(c) bcc and ccp (d) bcc and simple cubic cell

ΔU^θof
combustion of methane is – X
kJ mol^–1.
The value of ΔH^θ
is

(i) =
ΔU^θ

(ii) >
ΔU^θ

(iii) <
ΔU^θ

(iv) =
0

Cracking of Ethane gives a mixture of

Why do beryllium and magnesium not impart colour to the flame in the flame test?

The total number of electrons in the ground state of chromium with magnetic quantum number, $m$ = 0 is:

Correct order of bond angle is :

Why couldn't bohr's model explain stability of atoms to form molecules by chemical bonds?

Magnetic moment $\mu =\sqrt{15}B.M.$ is the true for the pair:

Which one of the following is not correct order of boiling points of the alkyl halides?

$\text{Match the following}\text{Unit Cell}\text{Lattice points in unit cell}\left(1\right)\text{FCC}\text{(i) 8}\left(2\right)\text{BCC}\text{(ii) 9}\left(2\right)\text{Primitive}\text{(ii) 14}$

Calculate the wavelength of the radiation which would cause the photo-dissociation of chlorine molecule if the Cl-Cl bond energy is 243 kJ/mol.

In a given energy level (n), the order of penetration effect of different orbitals is: