List of practice Questions

When $H _{2} S$ gas is passed through the $HCl$ containing aqueous solution of $CuCl _{2}, HgCl _{2}$, $BiCl _{3}$ and $CoCl _{2}$, it does not precipitate out
Among the following components of cement which is present in highest amount?
Non-cellular layer that connects inner surface of the epithelial tissue to the connective tissue is
Acetamide and $NaOBr/OH^-$ produce
According to MOT,$ C_2$ molecule has
During the summer season, which hormone concentration is maintained at high level ?
A tuning fork of frequency $340\,Hz $ is vibrated just above the tube of $120\,cm $ height. Water is poured slowly in the tube. What is the minimum height of water necessary for the resonance? (speed of sound in air $ =340\,m/s $ )
A tower stands at the centre of a circular park. $A$ and $B$ are two points on the boundary of the park such that $AB (= a)$ subtends an angle of $60^\circ$ at the foot of the tower, and the angle of elevation of the top of the tower from $A$ or $B$ is $30^??. The height of the tower is
A thermoelectric refrigerator works on
E. coli cells with a mutated $Z$ gene of the lac operon cannot grow in medium containing only lactose as the source of energy because
A stone is dropped from a height $h$ simultaneously, another stone is thrown up from the ground which reaches a height $4h$ . The two stones cross each other after time
A solid sphere is rotating about a diameter at an angular velocity $ \omega . $ If it coots so that its radius reduces to $ \frac{1}{n} $ of its original value, its angular velocity becomes
A simple telescope consisting of an objective of focal length $60\, cm$ and a single eye lens of focal length $5\, cm$ is focussed on a distant object in such a way that parallel rays comes out from the eye lens. If the object subtends an angle $2^{\circ}$ at the objective, the angular width of the image is
A round uniform body of radius $R$, mass $M$ and moment of inertia $I$, rolls down (without slipping) an inclined plane making an angle $\theta$ with the horizontal. Then its acceleration
The number of moles of $ KMnO_{4} $ reduced by one mole of $KI$ in alkaline medium is
The Okazaki fragments in $DNA$ chain growth : -
Which of the following oxidation states are the most characteristics for lead and tin respectively?
Which of the following polymers is prepared by condensation polymerisation ?
Which one of the following is a chain growth polymer?
Which one of the following ions is the most stable in aqueous solution? (At. no. $Ti = 22, V = 23, Cr = 24, Mn = 25$ )
Which one of the following shows functional isomerism ?
Which one of the following statements about amino acids is not true?
Lead concentration in blood is considered alarming if it is
In the energy band diagram of a material shown below, the open circles and filled circles denote holes and electrons respectively. The material is
In chloroplasts, chlorophyll is present in the