Recent questions tagged 2016

In context of Amniocentesis, which of the following statement is incorrect ?

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Spindle fibres attach on to

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Name the chronic respiratory disorder caused mainly by cigarette smoking

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Seed formation without fertilization in following plants involves the process of

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Which of the following structures is homologus to the wing of the birds ?

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Blood pressure in the pulmonary artery is -

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Which of the following is not a characteristic feature during mitosis in somatic cells ?

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Select the correct statement

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Emerson's enhancement effect and Red drop have been instrumental in the discovery of

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In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormally and it attacks self-cells, then it leads to

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A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. In which of the following physiological groups would you assign this plant ?

asked Aug 21, 2018 by pady_1

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A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is contaning more number of chromosomes as compared to other dividing cells. This would results in -

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Water soluble pigments found in plant cell vacuoles are -

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Which of the following features is not present in Periplaneta americana ?

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Which of the following statements is not correct ?

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Match the terms in Column-I with their description in Column-II and choose the correct option :

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A typical fat molecule is made up of -

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In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-typeoffspring. This indicates -

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Which of the following approaches does not give the defined action of contraceptive ?

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Which of the following is the most important cause of animals and plants being driven to extinction ?

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The Avena curvature is used for bioassay of

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Which is the National Aquatic Animal of India ?

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Which of the following is not a feature of the plasmids ?

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The coconut water from tender coconut represents :

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The two polypeptides of human insulin are linked together by

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The rate of a first order reaction is $0.04 \; mol\; l^{-1} s^{-1}$ at 10 seconds and $0.03 \; mol\; l^{-1}\; s^{-1}$ at 20 seconds after initiation of the reaction. The half-life period of the reaction is :

asked Aug 21, 2018 by pady_1

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The ionic radii of $A^+$ and $B^–$ ions are $0.98 \times 10^{–10}$ m and $1.81 \times 10^{–10}$ m. The coordination number of each ion in AB is :

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Which of the following statements is false ?

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Which of the following biphenyls is optically active ?

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Consider the following liquid-vapour equilibrium $Liquid \rightleftharpoons Vapour$ Which of the following relations is correct ?

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Which of the following statement about hydrogen is incorrect ?

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Which one given below is a non-reducing sugar ?

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The correct statement regarding RNA and DNA respectively is :

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The pressure of $H_2$ required to make the potential of $H_2$-electrode zero in pure water at $298$ K is :

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The product formed by the reaction of an aldehyde with a primary amine is :

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Consider the nitration of benzene using mixed conc. $H_2SO_4$ and $HNO_3$. If a large amount of $KHSO_4$ is added to the mixture, the rate of nitration will be :

asked Aug 21, 2018 by pady_1

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$MY$ and $NY_3$, two nearly insoluble salts, have the same KSP values of $6.2 \times 10^{–13}$ at room temperature. Which statement would be true in regard to $MY$ and $NY_3$ ?

asked Aug 21, 2018 by pady_1

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In the correct $X - C \equiv CH \xrightarrow[\text{(2) $CH_3CH_2Br$}]{\text{(1) $NaNH_2 / liq. NH_3$}} X \xrightarrow[\text{(2) $CH_3CH_2Br$}]{\text{$(1) NaNH_2 / liq.NH_3$}}$ X and Y are:

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Among the following the correct order of acidity is :

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Which of the following has longest $C – O$ bond length ? (Free $C – O$ bond length in $CO$ is $1.128 Å$)

asked Aug 21, 2018 by pady_1

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Which of the following statements about the composition of the vapour over an ideal 1 : 1 molar mixture of benzene and toluene is correct ? Assume that the temperature is constant at $25^oC$. (Given, Vapour Pressure Data at $25^oC$, benzene = 12.8 kPa, toluene = 3.85 kPa)

asked Aug 21, 2018 by pady_1

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Lithium has a bcc structure. Its density is $530\; kg\; m^{–3}$ and its atomic mass is $6.94\; g \;mol^{–1}$. Calculate the edge length of a unit cell of Lithium metal. (NA = $6.02 \times 10^{23} mol^{–1}$)

asked Aug 21, 2018 by pady_1

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Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape ?

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Which one of the following orders in correct for the bond dissociation enthalpy of halogen molecules ?

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Fog is a colloidal solution of :

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The product obtained as a result of a reaction of nitrogen with $CaC_2$ is

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Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer ?

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In Which of the following options the order of arrangement does not agree with the variation of property indicate against it ?

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Natural rubber has :

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The correct thermodynamic conditions for the spontaneous reaction at all temperatures is :

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