List of practice Questions

Imagine two bar magnets having same magnetic dipole moment $M$, are inclined with each other as shown in figure. Their resultant magnetic moment will be
A particle is performing vertical circular motion. The difference in tension at lowest and highest point is
The relative magnetic permeability $(\mu_r)$ of a substance is related to its susceptibility $(\chi)$ as
A spring produces extension $x$ by applying a force $F$. A body of mass $m$ suspended from the spring oscillates vertically with a period $T$. The mass of the suspended body is (neglect mass of spring)
In an LCR circuit, inductive reactance is $30\ \Omega$ and capacitive reactance is $30\ \Omega$. The resistance is found to be $40\ \Omega$. The probable impedance of the combination is
A metal surface is irradiated by radiations whose wavelength is $\lambda$. If the work function of the metal surface is negligibly small, then the de-Broglie wavelength of emitted electrons will be
In a transistor, doping level in base is increased slightly, the collector current and base current respectively
Which one of the following is NOT related to the entry of a pollen tube in an ovule?
Match Column - I with Column - II and select the correct option.
Which of the following is regarded as the pregnancy hormone?
Two springs of equal length and equal area of cross-section are suspended from a rigid support and loaded with same mass. Young’s modulus of two springs is in the ratio $4:3$. When the springs are stretched through some distance and released, they will oscillate with periods $T_1$ and $T_2$. The ratio $T_1 : T_2$ is
The boll worms attack ......
The length of DNA segment having 44 base pairs is ......
Which of the following is NOT the significance of vegetative propagation?
Select the correct match.
A thin delicate membrane surrounding the axon is ........
Important role played by factors R1, R2 and S during protein synthesis is ......
A two years old malnourished child is under weight, shows stunted growth, anemia, protruding belly and oedema of lower legs. He is probably suffering from ......... disease.
Menstrual cycle is found in .......
Reptiles were dominant during ........ period.
In the above diagram, what do the P and Q indicate?
The site for glycolysis in a cell is .............
Small inconspicuous flowers without bright colours but with versatile and exposed anthers are characteristic of ...................
Which one of the following is an example of predation?
A flower with five stamens bearing dithecous anthers has produced total 2560 male gametes. What would be the number of pollen mother cells per microsporangium in this flower?