List of practice Questions

Dihydrosterone is active form of
Exophthalmia or Graves disease is caused by
Secretory activity of digestive glands is checked by
Sex corticoids are secreted by
A halogen atom combines with another non-metal to form a compound with slight metallic lustre. The halogen atom is
A guitar string is $90\, cm$ long and has a fundamental frequency of $124\, Hz$. To produce a fundamental frequency of $186\, Hz$, the guitar should be pressed
A group of fungi with septate mycelium in which sexual reproduction is either unknown or lacking are classified under
A Grignard reagent may be made by reacting magnesium with
A group consists of $4$ girls and $7$ boys. In how many ways can a team of $5$ members be selected if the team has (i) no girls (ii) atleast one boy and one girl (iii) atleast three girls?
A glass is full of water at $4^{\circ}\,C$, when it is (a) cooled (b) heated then, which one of the following is correct
A glass slab of thickness 4 cm contains the same numbers of waves as 5 cm of water when both are traversed by the same monochromatic ray of light. The refractive index of water is 4/3, what is that for glass ?
A girl press her physics text book against a rough vertical wall with her hand. The direction of the frictional force on the book exerted by the wall is
A girl standing on a stationary lift (open from above) throws a ball upwards with initial speed $50 \,m \,s^{-1}$. The time taken by the ball to return to her hands is (Take $g= 10 \,m \,s^{-2}$)
A giant refracting telescope at an observatory has an objective lens of focal length $15\, m$. If an eye piece of focal length $.0 \,cm$ is used, what is the angular magnification of the telescope?
Who among the following was awarded the Nobel Prize for the development of PCR technique ?
A gaseous mixture of three gases A. B and C has a pressure of 10 atm. The total number of moles of all the gases is 10. If the partial pressures of Aand B are 3.0 and 1.0 atm respectively and if C has a mol/wt. of 2.0. What is the weight of C in g present in the mixture ?
The role of DNA ligase in the construction of a recombinant DNA molecule is
Which of the statements is correct in the context of observing DNA separated by agarose gel electrophoresis ?
While isolating DNA from bacteria, which of the following enzymes is not used ?
A gaseous mixture contains oxygen and nitrogen in the ratio of 1 : 4 by weight therefore the ratio of their number of molecules is
A gas $(X)$ is obtained when copper reacts with dilute $HNO_3$. The gas thus formed reacts with oxygen to give brown fumes of $(Y)$. $(Y)$ when dissolved in water gives an important acid $(Z)$ and the gas $(X)$. $X$ , $Y$ and $Z$ respectively are
A gas thermometer measures the temperature from the variation of pressure of a sample gas. If the pressure measured at the melting point of lead is 2.2 times the pressure measured at the triple point of water . Find the meiting point lead
A gas X diffuses three times faster than another gas Y, the ratio of their densities i.e., $D_x : D_y$ is
A galvanometer of resistance 100 ohms is shunted so that only 1/11 of the main current flows through the galvanometer. The resistance of the shunt is
A galvanometer coil has a resistance of $15\, \Omega$ and the metre shows full scale deflection for a current of $4 \,mA$. To convert the meter into a voltmeter of range $0$ to $18\, V$, the required resistance is