Ask & Answer: India's Largest Education Community

AlCl? , BeCl? and PCl? does not obey octet rule.
AlCl? and BeCl? both are electron-deficient species having six electrons in valence shell of central atom whereas PCl? has ten electrons in valence shell of phosphorous.
The structures are :

Among isoelectronic monoatomic species, size is inversely proportional to atomic number. Hence among isoelectronic species Na? , O²? , N³? , F? (having the nearest noble gas configuration);
Order of size is Na? < F? < O²? < N³?
N³? has least atomic number hence the largest size

nm = 2l + 1
As there are (2l + 1) number of permissible values of magnetic quantum number.
Hence, l = (nm - 1)/2

The GATE 2025 cutoff has been out for admission to various M.Tech programs. With a score of 642, your chances of admission are extremely favourable, as the cutoff ranged from 360 to 432 for the General AI category candidates, with various branches closing their admissions in the early rounds. 

For a more detailed look at which branch you are eligible for, refer to the table below. 

Note: This is the cutoff only for the General AI category, other categories and rounds have diffferent cutoffs.

An Atom has three fundamental particles-electron, proton and neutron. The mass of the electron is 9.10939 × 10? ³¹ kg. Neutrons and protons, both are collectively known as nucleons. All the isotopes of a given element show same chemical properties. Dalton's atomic theory, regarded atom as an ultimate particle of matter.

20 g of 20% CaCO? = 20 × (20/100) = 4 g CaCO?
CaCO? (100 g) - (1200 K)-> CaO + CO? (44 g)
According to the reaction,
100 g of CaCO? → 44 g of CO?
4 g CaCO? → (4×44)/100 g of CO?
= 1.76 g of CO?

INI CET Nov 2025 exam was held on November 9, 2025 at around 130 test cities. The exam was conducted in computer-based mode at allotted test centres across country. AIIMS uploaded INI CET 2025 result on November 15, 2025.

ln K = ln A – (E? /R) (1/T)
In ln K v/s 1/T graph
Slope = –E? /R
–5 × 10³ = –E? /8.314
E? = 5 × 10³ × 8.314
= 41500 J mol? ¹ or 41.5 kJ mol? ¹

H? O < H? S < H? Se < H? Te
Down the group acidic strength increases
So pK? value decreases

Kirloskar Institute of Management has not specified any age limit to apply for admission. However, it is mandatory for aspirants to fulfill the educational requirements. Aspirants who have completed their graduation in any disicipline are eligible to apply for PGDM programme at KIM Pune.

sp³d Dipole moment (μ) = 0
Trigonal bipyramidal Non-polar

For irreversible expansion of an ideal gas under isothermal condition
ΔU = 0, ΔS (Total) ≠ 0

Source - Multiple external/official sites, info may vary.

n (B) = 3/2
n (B) = 3, n (O) = 2
n (Total) = 3 + 2 = 5
X (B) = n (B) / n (T) = 3/5
X (O) = n (O) / n (T) = 2/5
P (S) = P° (B)X (B) + P° (O)X (O)
P (S) = 280 * (3/5) + 420 * (2/5)
= 336 mm of Hg

n (O? ) = 4/32 = 1/8 mol
n (H? ) = 2/2 = 1 mol
n (Total) = n (O? ) + n (H? ) = 1/8 + 1 = 9/8 mol
PV = nRT
P (Total) × 1 = (9/8) × 0.082 × 273
P (Total) = 25.18 atm

Delhi University is not really known for a BCA degree, but its School of Open Learning (SOL) offers a distance/online BCA program, or you can pursue similar computer Science degrees such as B.Sc. (H) Computer Science through CUET at regular Delhi University colleges. To apply for the DU SOL BCA, visit the DU SOL website, register, fill out the application form, upload documents, pay the fee, and then submit. You must pass the 10+2 examination from a recognised board, though specific marks and subject requirements for admission vary.  

Candidates who have secured a rank in the PUBDET merit list are eligible to participate in the counselling process. All eligible candidates must complete online e-registration before applying for seat allotment.

Medicine and Health specialised courses are ranked #23 by Shiksha Ranking, #13 by US News, #42 by QS Ranking, and #46 by THE (Times Higher Education). Medicine and Health specialised courses' ranking is as follows:

No, candidates cannot change their exam centre once the CPGET 2025 admit card is issued. The allotted test centre will be clearly mentioned on the admit card and must be followed as per the authority's instructions.