List of practice Questions

$0.42 \,g$ magnesium carbonate and $0.5\, g$ calcium carbonate are; heated strongly. What is the quantity left?

Name of a gaseous plant hormone is

$NH_{3}$ has higher boiling point than expected because

Most acidic amongst the following is

Monochromatic light of wavelength $667\, nm$ is produced by a helium neon laser. The power emitted is $9\, mW.$ The number of photons arriving per sec. on the average at a target irradiated by this beam is

Middle lamella is composed mainly of

Material of permanent magnet has

Manganese is required in

Lysosomes are formed by

LH and FSH are collectively called

Let $A$ and $B$ denote the statements $A: cos\,\alpha + cos\,\beta + cos \,\gamma = 0$ $B: sin \alpha + sin\, \beta + sin\,\gamma = 0$ If $cos\left(\beta-\gamma\right)+cos\left(\gamma-\alpha\right)+cos\left(\alpha-\beta\right)=-\frac{3}{2}$, then

Largest tiger population is found in

Kupffer cells are present in

L-shaped chromosomes are also called

Lady?? finger belongs to family

Lady's finger belongs to family

Knowing that the Chemistry of lanthanoids $(Ln)$ is dominated by its $+3$ oxidation state, which of the following statements in incorrect ?

Insectivorous plants are usually adapted to

Inflammation of joints due to accumulation of uric acid crystals is called as

In zone refining method, the molten zone

In Young's double slit experiment, the two slits act as coherent sources of equal amplitude a and of wavelength $\lambda$. In another experiment with the same set up, the two slits are sources of equal amplitude a and wavelength $\lambda$, but are incoherent. The ratio of intensities of light at the mid point of the screen in the first case to that in the second case is

$2$-acetoxy benzoic acid is

The number of radial nodes of $3\,s$ and $2\,p$ orbital are

The ratio of rates of diffusion of helium and methane under same conditions of temperature and pressure will be

Which is necessary for conversion of butane-$2$-one into propanoic acid?