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Jahn-teller effect is not observed is high spin complexes of: A. d⁴ B. d⁹ C. d⁷ D. d⁸

The john teller distortion, also known as the jahn-teller effect, is a nonlinear geometrical distortion of a molecule that lowers its symmetry... View Article

What is the contribution of particle at the edge centre of a particular unit cell is?

The smallest repeating unit of a crystal lattice, or the building block of the crystal, is called a unit cell. A crystal lattice is the... View Article

Which of the following intermediates have the complete octet around the carbon atom ?A) Carbonium ion B) Carbanion C) Free radical D) Carbene

Answer: (B) In a carbanion, carbon is trivalently bound to three atoms or groups and contains eight electrons (octet). It's a species with a... View Article

In which of the following will the Kharasch effect operate? (A) CH3−CH2−CH−CH2+HCl (B) CH3−CH2−CH=CH2+HBr (C) CH3−CH=CH−CH3+HBr (D) CH3−CH2−CH=CH2+HI

When unsymmetrical alkenes react with alkyl halides (particularly HBr) in the presence of peroxides (mainly benzenes) and the reaction proceeds... View Article

What happens when calcium reacts with water?

When calcium metal reacts with water, it reacts less violently. It produces a hydroxide known as calcium hydroxide (a cloudy white precipitate),... View Article

The adsorption of hydrogen on charcoal is which type of absorption?

Answer: Occlusion Adsorption is the process of one substance forming a film or coating on the surface of another. The adsorbate is the... View Article

What is the ph of a 0.00001 molar hcl solution?

The concentration of the solution is previously known to be 0.00001 molar (10-5M). It is now assumed that the solution has been diluted a... View Article

Alkali metal acts as strong reducing agents explain

The periodic table's group 1 includes alkali metals. Reducing agents are chemicals or elements that may reduce others while also becoming... View Article

A hot liquid contained in a container of negligible heat capacity loses temperature at rate 3K/min just before it begins to solidify. The temperature remains constant for 30 min. If the ratio of specific heat capacity of liquid to specific latent heat of fusion is x/90K−1. Find x. (given that the rate of losing heat is constant).

The heat gain or heat loss for a change of temperature of ΔT of the substance is given as Q=mcΔT. Here, m is the mass of the substance and c is... View Article

Which among the following solids is a nonpolar solid ? A. Hydrogen chloride B. Sulphur dioxide C. Water D. Carbon dioxide

The electric charge in non-polar materials is distributed uniformly across the molecule. Carbon dioxide, benzene, methane, and diatomic gases... View Article

The correct order of bond angle (1) PF₃<PC_l3<PBr₃<PI₃ (2) PI₃<PC_l3<PBr₃<PF₃ (3) PF₃<PBr₃<PC_l3<PI₃ (4) PF₃<PC_l3<PI₃<PBr₃

Phosphorus has a 3 outer shell. The outermost shell comprises a total of five electrons, with two electrons in 3s and three electrons in 3p.... View Article

In a compound atom of element ‘Y’ form CCP lattice and those of element ‘X’ occupy 2/3rd of tetrahedral voids. The formula of the compound will be- (A)- X₂Y₃ (B)- X₂Y (C)- X₃Y₄ (D)- X₄Y₃

Y atom occupies the CCP lattice, hence the effective number of Y atoms = 4 (As the effective number of atoms in CCP is 4) The number of... View Article

Is glycine optically inactive?

Answer: Yes The chiral amino acid glycine is the only one having a single hydrogen atom in its side chain. Glycine is optically inactive... View Article

Compare the ionising powers of α:β:γ particles. A. 10²:10⁴:1 B. 10¹:10⁴:10² C. 10⁴:10²:1 D. None of these

Answer: (c) Let's start with a definition of α:β:γ particles. An alpha, beta , or gamma particle is emitted when one nucleus is transformed... View Article

The solubility of alkali metal hydroxide is: A)LiOH

Answer: (a) Alkali hydroxides are chemical compounds that contain an alkali metal cation as well as a hydroxide anion. Alkali hydroxides... View Article

What is the total number of alkenes possible by debromination of 3 – Bromo – 3 – cyclopentylhexane using alcoholic KOH?

In the provided question, we must determine the total number of alkenes that will be formed when bromine is removed from 3 - Bromo - 3 -... View Article

Among the following oxides how many of them are amphoteric oxides (A) BeO (B) SnO (C) ZnO (D) Al₂0₃

Amphoteric materials include aluminium oxide, beryllium oxide, tin oxide, and zinc oxide. They react both as a basic and as an acid. The oxide... View Article

A soft silver metal (A) burns with a golden yellow flame to give a yellow powder (B) which on treatment with water liberates oxygen giving a clear solution (C). The solution placed on Al attacks this metal liberating a gas (D) and forming a water soluble compound (E). The metal (A) dissolves in liq. NH3 to form a deep blue solution which is a good conductor and an excellent reducing agent. Identify C.

Sodium is a soft silver metal (A) that burns with a golden yellow flame to produce a yellow powder. Sodium also burns in air to produce a yellow... View Article

State true or false. KMnO4 in acidic medium is always reduced to Mn²⁺

True when potassium is added to an acidic solution, the permanganate (VII) is reduced to its (pale pink) +2 oxidation state of the manganese... View Article

Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 gram of polymer of molar mass 185000 in 450 ml of water at 37∘C.

The expression of osmotic pressure is given below: π=icRT Where π is the osmotic pressure, i is the van’t Hoff index, c is the concentration of... View Article

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