Recent questions tagged 1998

Genetic engineering involves :

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Knife of DNA :

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Nucleic acid in HIV :

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DNA of E.Coli :

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Indicator of water pollution :

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AA Bb Cc genotypes form how many types of gametes :

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Saccharomyces cerevissae is used in the formation of :

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Which of the following yields citric acid :

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Water is essential for bryophyta :

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Contraction in gall bladder stimulated by :

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If Mendel might have studied 7 pairs of characters in a plant with 12 chromosomes instead of 14 then :

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One mole of an ideal gas at 300 K is expanded isothermally from an initial volume of 1 litre to 10 litres. The $\Delta E$ for this process is ($R = 2 cal. mol^{ –1}{ K^–1}$) :

asked Jun 15, 2018 by pady_1

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The second order Bragg diffraction of X-rays with $\lambda$ = 1.00 Å from a set of parallel planes in a metal occurs at an angle 60º. The distance between the scattering planes in the crystal is :

asked Jun 15, 2018 by pady_1

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Which one of the following pairs of substances on reaction will not evolve $H_2$ gas ?

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At the critical micelle concentration (CMC) the surfactant molecules :

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The edge length of face centred unit cubic cells is 508 pm. If the radius of the cation is 110 pm, the radius of the anion is :

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Identify the correct statement regarding entropy:

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The number of molecules of ATP produced in the lipid metabolism of a molecule of palmitic acid is :

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Uncertainity in position of a $e^–$ and He is similar. If uncertainity in momentum of $e ^–$ is $32 \times 10^ 5$, then uncertainity in momentum of He will be :

asked Jun 15, 2018 by pady_1

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Mole fraction of solute is 0.2 in solution then lowering in V.P $\bigtriangleup P = 10$. If lowering in V.P. $\bigtriangleup P = 20$ then mole fraction of solvent will be in solution :

asked Jun 15, 2018 by pady_1

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The radius of hydrogen shell is 0.53Å, then in first excited state radius of shell will be :

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In $PO{_4^ {-3}}$formal charge on every oxygen atom and P-O bond order is respectively :

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$4NH_3+5O_2\rightarrow6H_2O+4NO$ <br> When one mole ammonia and one mole oxygen taken :

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In the Haemoglobin (Molecular wt = 67200) iron found 0.33% (by weight). The number of iron atom will be in its one molecule :

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By which method activation energy can be calculated?

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The IUPAC name of $[Co(NH_3)_3)ClBrNO_2]$ will be :

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Maximum oxidation state will be of :

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Schottky defect shows :

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Maximum impurity in Pig iron will be of :

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Number of significant number will be in following numbers : <br> a)161 cm b)0.0161 c)1.61

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Which of the following gives colour with the water :

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First ionization potential of Be and B will be :

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1% solution of other compound is isotonic with 5% sucrose (sugar) solution. Then molecular wt. of compound will be :

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When $X\rightarrow{_7N^{14}}+2\beta^-$ – then number of neutron will be in X :

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$_nX^m$ emitted one $\alpha$ and $2\beta$ particles, then it will become :

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Number of isomers of $[Pt(NH_3)_4][CuCl_4]$ complex are :

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The chiral centre is absent in :

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The fertilizer which makes the soil acidic :

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In which of the following molecule. The internuclear distance will be maximum :

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Density of which of the following substance not decreases on adding $Br_2$ vapours :

asked Jun 15, 2018 by pady_1

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$A + B \rightleftharpoons C + D Constant = K_{1}$<br> $E + F \rightleftharpoons G + H Constant = K_{2}$ <br> then $C + D + E + F \Rightarrow$ product. The constant of reaction will be :

asked Jun 15, 2018 by pady_1

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The cell reaction of an electrochemical cell is $Cu^{+2}(C_1) + Zn \rightarrow Zn^{+2}(C_2) + Cu$. The change in free energy will be the function of :

asked Jun 15, 2018 by pady_1

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The concentration of $ZnCl_{2}$ solution will change when it is placed in a container which is made of :

asked Jun 15, 2018 by pady_1

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When a substance A reacts with water it produces a combustible gas B and a solution of substance C in water. When another substance D reacts with this solution of C, it also produces the same gas B on warming but D can produce gas B on reaction with dilute sulphuric acid at room temperature. A imparts a deep golden yellow colour to a smokeless flame of bunsen burner A, B, C and D respectively are:

asked Jun 15, 2018 by pady_1

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The number of antibonding electron pair in $O{_2}^{-2}$ is :

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Which of the following molecule is not paramagnetic :

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A complex compound which is formed by ligands nitrate and chloride. It gives two moles of AgCl precipitate with $AgNO_{3}$ . What will be its formulae :

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Aniline reacts with $Br_{2}$ water, $NaNO_{2}/HCl$ gives respectively :

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Which of the following does not give nucleophilic substitution with alcohol :

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2-Bromo pentane reacts with ethanolic KOH gives main product :

asked Jun 15, 2018 by pady_1

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