List of practice Questions

Smelting is usually carried out in

$ {SnCl2 + 2HgCl2 -> }$$\underset{\text{White ppt.}}{ {(A)}}$ $ {(A) + SnCl2 -> }$$\underset{\text{Grey}}{ {(B)}}$ A and B are

Skeletal muscle fibre has light and dark bands. Which his correct match of protein with its light refractive property and colour $\quad$Protein$\quad$$\quad$$\quad$ Colour $\quad$$\quad$$\quad$Property

Skull of man is

Six cards and six envelopes are numbered $1$, $2$, $3$, $4$, $5$, $6$ and cards are to be placed in envelopes so that each envelope contains exctly one card and no card is placed in the envelope bearing the same number and moreover the card numbered $1$ is always placed in envelope numbered $2$. Then the number of ways it can be done is

Six moles of an ideal gas performs a cycle shown in figure. If the temperature are $T_A = 600\, K, T_B = 800\, K, T_C = 2200 \,K$ and $T_D = 1200\, K$, the work done per cycle is approximately

Six boys and six girls sit along a line alternatively in $x$ ways and along a circle (again alternately in $y$ ways), then

$\sin (\cot^{-1}(\tan\,\cos^{-1}x)$ is equal to

$\frac{\sin( -660?) \, \tan(1050?) \, \sec(- 420?)}{\cos( 225?) \, cosec(315?) \, \cos(510?)} $ =

$\sin\left(\frac{1}{2} \cos^{-1} \frac{4}{5}\right)$ is equal to:

$\sin^{-1} \left(\cos \frac{\pi}{6}\right) $ is equal to:

SI Unit of a physical quantity whose dimensional formula is $m^{-1}L^{-2}A^2$ is

SI unit of Coefficient of viscosity is

Sexual reproduction in fungi occurs by all of the following except

'Sex ratio' means

Sexual reproduction in fungi is carried out by the fusion of compatible nuclei from two parents at a definite stage in the life cycle. Identify the different types of sexual reproduction occurring in fungi from the given figures and select the correct option.

Select the pairs of sedimentary biogeochemical cycles. I. Hydrogen cycle and water cycle II. Phosphorus cycle and sulphur cycle III. Calcium cycle and magnesium cycle IV. Carbon cycle and nitrogen cycle

Select the question having the answer as 'Yes'? (1) can a dimensional quantity be unitless ? (2) can a quantity having units be dimensionless ? (3) can a quantity have different dimensions in different sy stems of units ? (4) can the magnitude of a quantity be different in different systems of units ?

Seminal plasma, the fluid part of semen, is contributed by (i) seminal vesicle (ii) prostate (iii) urethra (iv) bulbourethral gland

Select the incorrect statement about external fertilisation.

Select the Incorrect statement regarding the plasma membrane

Select the incorrect statement with respect to the category, 'genus'.