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$H_{2}O$ is dipolar, whereas $BeF_{2}$ is not. It is because:
Which of the following molecules is non-polar in nature?
The correct statement among the following is :
An object is thrown along a direction inclined at an angle of $45^\circ$ with the horizontal direction. The horizontal range of the particle is equal to:
At S.T.P. the density of $\text{CCl}_4$ vapour in $\text{g/L}$ will be nearest to:
Stomatal movement is not affected by
The most preferred structure among the following with the lowest energy for $SO_{3}$ is:
The quantities which have the same dimensions as those of solid angle are:
The dipole moment of compound AB is 10.92 D and that of compound CD is 12.45 D. If the bond length of AB is 2.72 $\text{\AA}$ and that of CD is 2.56 $\text{\AA}$, then for these compounds the correct statement is:
In the equation $GPP - R = NPP$, R represents :
A compound among the following that is least likely to behave as a Lewis base is:
The earth is assumed to be a sphere of radius $R$. A platform is arranged at a height $R$ from the surface of the earth. The escape velocity of a body from this platform is $fv_e$, where $v_e$ is its escape velocity from the surface of the earth. The value of $f$ is:
Calculate the mass of 95% pure $CaCO_3$ that will be required to neutralize 50 mL of 0.5 M HCl solution according to the following reaction: $$ CaCO_3(s) + 2HCl(aq) \rightarrow CaCl_2(aq) + CO_2(g) + 2H_2O(l) $$ [Calculate up to the second place of decimal point]
The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is
The molar mass of a compound (X), whose $2.6 \text{ mol}$ weighs $312 \text{ g}$, is:
A body weighs $200 \text{ N}$ on the surface of the earth. How much will it weigh halfway down the centre of the earth?
Calculate the mole fraction of the solute in a $1.00 \text{ m}$ aqueous solution.
MTP was legalised in India in:
Which of the following is the most basic oxide?
Bicarpellary ovary with obliquely placed septum is seen in: