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Flippers of Penguins and Dolphins are examples of
A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity $4 \text{ m s}^{-1}$. The ball strikes the water surface after $4 \text{ s}$. The height of bridge above water surface is (Take $g = 10 \text{ m s}^{-2}$)
In a quantitative analysis of second group in the lab, $H_2S$ gas is passed in an acidic medium for ppt. When $Cu^{2+}$ and $Cd^{2+}$ react with $KCN$, then in which of the following conditions will a precipitate not be formed due to relative stability:
Above Curie temperature:
Concanavalin A is
A magnetic moment of 1.73 BM will be shown by one among the following:
Which of the following species has a linear shape?
Symbolic representation of four logic gates are shown. Pick out which ones are for AND, NAND and NOT gates, respectively.
A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in water. The mass of water that will rise in this tube is :
Match the following Column-I with Column-II: Column-I A. Synapsis aligns homologous chromosomes B. Synthesis of RNA and protein C. Action of enzyme recombinase D. Centromeres do not separate, but chromosomes move towards opposite poles Column-II (i) Pachytene (ii) Zygotene (iii) G2-phase (iv) Anaphase I
Which of the following is a paramagnetic compound?
The heart of a man pumps $5 \text{ L}$ of blood through the arteries per minute at a pressure of $150 \text{ mm}$ of mercury. If the density of mercury is $13.6 \times 10^3 \text{ kg/m}^3$ and $g = 10 \text{ m/s}^2$, then the power of heart in watt is:
Select the correct option.
Which of the following statements is not correct?
A molecule having the maximum dipole moment among the following is -
When a block of mass $M$ is suspended by a long wire of length $L$, the length of the wire becomes $(L+l)$. The elastic potential energy stored in the extended wire is:
The existence of two different coloured complexes with the composition of $[Co(NH_3)_4Cl_2]^+$ is due to:
One of the legal methods of birth control is:
Which orbital does the additional electron occupy when $O_{2}$ is converted to the $O_{2}^{-}$ ion?
If a car at rest accelerates uniformly to a speed of $144 \text{ km/h}$ in $20 \text{ s}$, then it covers a distance of: