List of practice Questions

Coxal bones of pelvic girdle is not formed by
Columns of Bertin is the structure found in
Which of the following statements is false about ER?
Which one of the following features is false about nucleus?
Larger subunit of 80S ribosome is
Chiasmata are first seen during
Which type of cell connections generally prevent materials from passing between cells?
Bakelite is an example of a
An carthquake gencrates both transverse $(S)$ and longitudinal $(P)$ sound waves in the earth. The spced of $S$ waves is about $4.5 \,km / s$ and that of $P$ waves is about $8.0 \,km / s$. A scismograph records $P$ and $S$ wavcs from an carthquake. The first $P$ wave arrives $4.0\, min$ before the first $S$ wave. The cpicentre of the earthquake is located at a distance about
A rocket with a lift-off mass $3.5 \times 10^4$ kg is blasted upwards with an initial acceleration of ${10 \, m \, s^{-2}}$. Then the initial thrust blast is
A moving coil galvanometer of resistance 100 $\Omega$ is used as an ammeter using a resistance 0.1 $\Omega$. The maximum deflection current in the galvanometer is 100 $\mu$A. Find the minimum current in the circuit, so that the ammeter shows maximum deflection
A boy standing between two cliffs claps and hear two echoes, the first after 2 seconds and the second after 3 seconds. The velocity of sound is 360 m/sec. The distance in meter between the two cliffs is
On a particular day, the maximum frequency reflected from the ionosphere is 9 MHz. On another day, it was found to increase by 1 MHz. What is the ratio of the maximum electron densities of the ionosphere on the two days?
The length of an elastic string is a metre, when the longitudinal tension is 4 N and the length is $b$ m, when the tension is 5 N. When the longitudinal tension is 9 N, the length of the string (in metre) is
A bus travelling the first one-third distance at a speed of ${10 \, km \, h^{-1}}$, the next one-third at ${20 \, km \, h^{-1}}$ and last one third at ${60 \, km \, h^{-1}}$. The average speed of bus is
A man standing on the road has to hold his umbrella at 30 degrees from the vertical direction to keep the rain away. He thrown away the umbrella and starts running at ${10\, km \, h^{-1}}$, he finds that the rain drops are hitting him vertically. The speed of the rain drops w.r.t. the road is
A projectile is fired vertically upwards from the surface of the Earth with a velocity $k\upsilon _e$ , where $\upsilon_e$ is the escape velocity and $k < 1$ . If $R$ is the radius of the Earth, the maximum height to which it will rise measured from the centre of the Earth will be
Structure of a mixed oxide is cubic close packed $(ccp)$. The cubic unit cell of mixed oxide is composed of oxide ions. One fourth of the tetrahedral voids are occupied by divalent metal A. The octahedral voids are occupied by a monovalent metal B. The formula of the oxide is
The coagulation of 200 mL of a positive colloid took place when 0.73 g HCl was added to it without changing the volume much. The flocculation value of HCl for the colloid is
The component of a vector $\vec{r}$ along $x$-axis will have maximum value if
The composition of ?copper matte? is,
The complex formed when $Al_2O_3$ is leached from Bauxite using concentrated NaOH solution is,
Sulphur sol contains
Reactions in zeolite catalyst depend on,
Main axis of a diatomic molecule is $Z$, molecular orbital $p_x $ and $ p_y$ overlaps to form, which of the following orbitals?