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Shape of $C{O}_2$ & $Si{O}_2$ respectively are

Nuclear fusion

What will rotation of joint B for the frame shown below?

Calculate(a)molality (b)molarity and (c)mole fraction of KI if the density of 20% (mass/mass) aqueous KI is1.202 g mL^-1.

Which of the following is the most stable conformer of butane-2,3-diol?

How many tetrahedral voids will be formed, if 2n Octahedral voids are formed in the cubic close packing?

An electric bulb works on which of the following principles:

Electron near the nucleus has more energy.But in this chapter I was taught that energy is maximum at infinity. What is the difference between the two?

The statement(s) true about $PC{l}_{2}B{r}_3$ is/are:

Which of the following ligands is/are π acceptor(s)?

The molecular mass of $PC{l}_5$ is 208.32 but when heated to $230\circ C$, it is reduced to 124. The extent of dissociation of $PC{l}_5$ at this tempearature will be

Number of $\sigma and\pi$ bonds in Benzonitrile are?

Treatment of benzene with $CO/HCl$ in the presence of anhydrous $AlC{l}_3/CuCl$ followed by reaction with $A{c}_{2}O/NaOAc$ gives compound X as the major product. Compound X upon reaction with $B{r}_2/N{a}_{2}C{O}_3$, followed by heating at 473 K with moist $KOH$ furnishes Y as the major product. Reaction of X with $H_2/Pd-C,$followed by $H_{3}P{O}_4$ treatment gives Z as the major product.

The compound Z is:

In $O_2^{-}$, $O_{2}and{O}_2^{2-}$ molecular species, the total number of anti-bonding electrons respectively are:

Which of the following combinations in an aqueous medium will give a blue colour (or) precipitate?

Compressibility factor $\left(Z\right)$ is plotted against pressure $\left(p\right)$ for four different gases $A,B,C$ & $D$. The correct order of critical temperature of the gases shown in the above graph is

Ethyl Isocynaide on hydrolysis with acid gives

Which one of the following sequences will convert tert-Butyl alcohol to 2-methylpropanoic acid?



1 - $H_{2}S{O}_4$ and heat

2 – hydroboration oxidation

3 – Oxidation

One mole of the complex compound $Co(N{H}_3{)}_{5}C{l}_3$, gives $3$ moles of ions on dissolution in water. One mole of the same complex reacts with two moles of $AgN{O}_3$ solution to yield two moles of $AgCl\left(s\right)$. The structure of the complex is

Among acetic acid, phenol and n-hexanol, which of the compound(S) will react with NaHCO₃ solution to give sodium salt and CO₂?

Let's take a Rubik's cube.

We know that a Rubik's cube is made up of 27 identical smaller cubes which make up one large cube as seen in the picture above.

Let us assume that the one of the small cubes is missing. What will be the packing fraction in this case?

Nitrogen
exists as diatomic molecule and phosphorus as P₄.
Why?

The $\text{RMS}$ value of potential difference $V$ shown in the figure is

A compound which is not a constitution isomer of

is

Find the correct order of the ionic radius of following isoelectronic species.

Write
the structures of products of the following reactions;

(i)

(ii)

(iii)

(iv)

How many effective $N{a}^{+}andC{l}^{–}$ ions are present respectively in a unit cell of NaCl solid (Rock salt structure) if all ions along line connecting opposite face centres are absent?