Recent questions tagged medium

Regarding life cycle of plants and sporophyte : Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding life cycle of plants and sporophyte : Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding flower (of angiosperm) : Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding flower (of angiosperm) : Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding flower (of angiosperm) : Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding Gymnosperms: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding Gymnosperms: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Wax,resin and suberin coating on the surface of plant parts reduce the rate of transpiration}\\\text{Reason:These adaptations are found mostly in xerophytes}\end{array}$

asked Apr 2, 2014 by sreemathi.v

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Regarding Gymnosperms: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding pteridophytes: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding reproduction in pteridophytes : Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding leaves in pteridophyta : Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding leaves in pteridophyta : Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding reproduction in mosses: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding red algae: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding Phaeophyceae: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding Phaeophyceae: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding Phaeophyceae: Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding classes and Major Pigments of algae - Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding classes and Cell Wall of algae - Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding classes and Stored Food of algae - Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Regarding classes and Major Pigments of algae - Match the following and choose the most appropriate option:

asked Apr 2, 2014 by pady_1

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Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Light is very important external factor of transpiration}\\\text{Reason:Light induces stomatal opening and darkness stomatal closure.Thus the rate of transpiration increases in light and decreases in dark}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Regarding the form and size of algae - Match the following and choose the most appropriate option: (each option on both columns can be matched to multiple option on the another side ie right or left) eg. A-1,2 ; B,C,D-3 ; A,B,C-3,4

asked Apr 2, 2014 by pady_1

1 answer

Match the following and choose the most appropriate option: (each option on both columns can be matched to multiple option on the another side ie right or left) eg. A-1,2 ; B,C,D-3 ; A,B,C-3,4

asked Apr 2, 2014 by pady_1

1 answer

Match the following and choose the most appropriate option: (each option on both columns can be matched to multiple option on the another side ie right or left) eg. A-1,2 ; B,C,D-3 ; A,B,C-3,4

asked Apr 2, 2014 by pady_1

1 answer

Match the following and choose the most appropriate option: (each option on both columns can be matched to multiple option on the another side ie right or left) eg. A-1,2 ; B,C,D-3 ; A,B,C-3,4

asked Apr 2, 2014 by pady_1

1 answer

Match the following and choose the most appropriate option: (each option on both columns can be matched to multiple option on the another side ie right or left) eg. A-1,2 ; B,C,D-3 ; A,B,C-3,4

asked Apr 2, 2014 by pady_1

1 answer

Match the following and choose the most appropriate option: (each option on both columns can be matched to multiple option on the another side ie right or left) eg. A-1,2 ; B,C,D-3 ; A,B,C-3,4

asked Apr 2, 2014 by pady_1

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:If a bottle filled with volatile substance is opened at a corner of the room the odour of substance can be smelled from another corner}\\\text{Reason:The volatile substances diffuse from the region of higher concentration to the region of lower concentration}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The water molecules are held together from substomatal cavities in leaves to the roots because of cohesive force}\\\text{Reason:Water does not ascend in stem due to transpiration pull}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses

asked Apr 2, 2014 by sreemathi.v

1 answer

Intramolecular hydrogen bonds occur is (i) 2- chlorophenol (ii) Salicylic acid (iii) para nitrophenol (iv) none of these

asked Apr 2, 2014 by meena.p

1 answer

Given the Assertion and Reason below, Choose one of the following responses -

asked Apr 2, 2014 by sreemathi.v

1 answer

Which of the following species contain covalent coordinate bonds? $(i)\; AlCl_3 \\ (ii)\;CO \\ (iii)\;[Fe(CN)_6]^{4-} \\ (iv)\; NO_3^{-}$

asked Apr 2, 2014 by meena.p

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Plasmolysis occurs when the plant cells are highly placed in concentrated sugar or salt solution}\\\text{Reason:Highly concentrated sugar or salt solution acts as hypotonic solution which leads to exosmosis}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The cells of the root have lower water potential than leaf cells }\\\text{Reason:Root cells have greater solute concentration}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses$\begin{array}{1 1}\text{Assertion:Root pressure is the reason for ascent of sap in herbaceous plants}\\\text{Reason:Root pressure is due to diffusion pressure gradient and is maintained by the activity of living cells}\end{array}$

asked Apr 2, 2014 by sreemathi.v

1 answer

Which of the following conditions apply to resonating structures? (i) Identical arrangements of atoms (ii) Nearly same energy content (iii) Identical number of bonds (iv) Same number of unpaired electrons

asked Apr 2, 2014 by meena.p

1 answer

Match the items of column I with the appropriate items in column II:

asked Apr 2, 2014 by sreemathi.v

1 answer

Match the items of column I with the appropriate items in column II:

asked Apr 2, 2014 by sreemathi.v

1 answer

In which of the following the hybrid orbitals of the central atom have the same s-characters ? $(i)\;CH_4 \qquad (ii)\; Ni(CO) \qquad (iii)\;SF_4 \qquad (iv) [Ni(CN)_4]^{2-} $

asked Apr 2, 2014 by meena.p

1 answer

Match the items of column I with the appropriate items in column II:

asked Apr 2, 2014 by sreemathi.v

1 answer

The electronegativities of $F,Cl,Br$ and $I$ are $4.0,3.0,2.8$ and $2.5$ respectively. Hydrogen halide with a high percentage of ionic character is

asked Apr 2, 2014 by meena.p

1 answer

$N_2$ forms $Ncl_3$ whereas P can form both $Pcl_3$ and $PCl_5$ why ?

asked Apr 2, 2014 by meena.p

1 answer

Which one of the following oxides is expected to exhibit paramagnetic behaviour ?

asked Apr 2, 2014 by meena.p

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Correct order of dipole moment for the following molecules is

asked Apr 1, 2014 by meena.p

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The cyanide ion, $CN^{-}$ and $N_2$ are isoelectronic . But in contrast to $CN^{-},N_2$ is chemically inert, because of

asked Apr 1, 2014 by meena.p

1 answer

During the formation of a molecular orbital from atomic orbitals , the electron density is

asked Apr 1, 2014 by meena.p

1 answer

Which of the following molecular is the most polar?

asked Apr 1, 2014 by meena.p

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