List of practice Questions

Total number or voids in $0.5$ mole or compound forming hexagonal closed packed structure are
The exchange of segments of non-sister chromatids between chromosomes of a homologous pair is termed as
A $d.c$. battery of $V$ volt is connected to a series combination of a resistor $R$ and an ideal diode $D$ as shown in the figure below. The potential difference across $R$ will be
A man, of mass $60\, kg$, is riding in a lift. The weight of the man, when the lift is accelerating upwards and downwards at $2\, ms ^{-2}$ are respectively (taking $g=10\, ms ^{-2}$ )
Crystals can be classified into basic crystal habits equal to
Passive immunity can be obtained by injecting
In transformer, core is made of soft iron to reduce
At identical temperature and pressure, the rate of diffusion of hydrogen gas is $3\sqrt{3}$ times that of a hydrocarbon having molecular formula $C_{n}H_{2n-2}$. What is the value of $'n'$ ?
Structural formula of Lewisite is
Nuclear membrane is absent in
A real gas behaves like an ideal gas if its
Binomial nomenclature was given by :
Water gas is a mixture of
Egg apparatus consists of
Golden rice is rich in
Two masses $ 8 \,kg $ and $ 12 \,kg $ are connected at the two ends of a string that goes over a frictionless pulley. Calculate the acceleration of the masses and the tension in the string. Take $ g = 10 \,m/s^2 $
Two common characters found in centipede cockroach and crab are-
Two coherent sources of different intensities send waves which interfere. The ratio of maximum intensity to the minimum intensity is 25. The intensities of the sources are in the ratio
Tuberculosis is caused by
Three cards are drawn successively without replacement from a pack of $ 52 $ well shuffled cards. The probability that first two cards are queens and the third card is a king, is
The white $ ZnO $ turns yellow on heating because of
The word "phylum" in taxonomy was coined by
The ultimate biological unit which controls heredity is called
The time period of a simple pendulum of length $L$ as measured in an elevator descending with acceleration $ \frac{g}{3} $ is
The time period of a geostationary satellite is