Q126.
840g of MgCO3 sample ( % purity = 50% ) decomposed to give MgO + CO2 . Calculate mass of MgO and Volume of CO2 produced ?
Note : [ solution is attached with questions, attempt first by yourself ]
840g of MgCO3 sample ( % purity = 50% ) decomposed to give MgO + CO2 . Calculate mass of MgO and Volume of CO2 produced ?
Note : [ solution is attached with questions, attempt first by yourself ]
Anonymous Quiz
20%
300g and 132 L
20%
200g and 142L
40%
400g and 112 L
20%
200g and 112 L
Q127. Mol fraction of A in H20 is 0.2 Molality of A in H20 ?
Anonymous Quiz
33%
0.8
44%
13.8
17%
12.8
6%
14.8
Media is too big
VIEW IN TELEGRAM
Actual form of starting and joining in a journey forward supremacy power [ meditation ]⭐️❤️
Target 1 : first connect to some high supremacy , u are doing prayer but atleast do samarpan to your Ishttt❤️
tab jake koi kam kro ge padai xyz ,, ache se focus hoga
tab jake koi kam kro ge padai xyz ,, ache se focus hoga
Inorganic and organic ki ncert mai yahi cover krdo ga questions ke through + Notes bhi provide krdo chapter finished hote hi .... ❤️
ClassifiCation of ElEmEnts and PEriodiCity in ProPErtiEs ✅👇
Q1. The period number in the long form of the periodic table is equal to
[ NCERT EXAMPLER ]
[ NCERT EXAMPLER ]
Anonymous Quiz
11%
magnetic quantum number of any element of the period
22%
atomic number of any element of the period
67%
maximum principal quantum number of any element of the period
0%
maximum azimuthal quantum number of any element of the period
Q2. Modern periodic table is based on atmoic number of elements . experiment which proved significance of atomic number was
Anonymous Quiz
18%
mullikans oil drop experiment
71%
moseley's work on X ray spectra
12%
braggs work on X ray diffraction
0%
discovery of X rays by Rontgen
Q3
Statement 1 : Periodic law revealed important analogies among the 94 naturally occurring elements [ Np & Pu like Actinium & proactinium are also found in pitch blende –an ore of uranium)
statement 2 : It stimulated interest in Inorganic Chemistry
Statement 1 : Periodic law revealed important analogies among the 94 naturally occurring elements [ Np & Pu like Actinium & proactinium are also found in pitch blende –an ore of uranium)
statement 2 : It stimulated interest in Inorganic Chemistry
Anonymous Quiz
25%
Statement 1 is incorrect statement 2 is correct
13%
Statement 1 is correct statement 2 is incorrect
13%
Statement 1 is incorrect statement 2 is incorrect
50%
Statement 1 is correct statement 2 is correct
Q4. Periodic Law is essentially the consequence
of the following ?
of the following ?
Anonymous Quiz
0%
atomic number is equal to the nuclear charge ( no of protons) or no of electrons in a neutral atom
0%
Easy to visualize significance of quantum no & electronic configurations in periodicity of elements
38%
periodic variation in electronic configurations determine physical & chemical properties of elements
62%
all of above
Q5. Which of the following is correct for “long form” of the Periodic table .
Anonymous Quiz
7%
The horizontal rows (which Mendeleev called series) are called groups , vertical columns: periods.
29%
Elements having similar outer electronic config in their atoms are arranged in horizontal columns
36%
period number corresponds to the highest principal quantum number (n) of the element in period
29%
correct order of configuration is : ns — [n-1]d—[n-2]f—np
Q6. [ JEE MAINS ]
Statement (I): A plot of √ν (ν = frequency of X-rays emitted) vs atomic mass is a straight line.
Statement (II): A plot of ν (ν = frequency of X-rays emitted) vs atomic number is a straight line.
Statement (I): A plot of √ν (ν = frequency of X-rays emitted) vs atomic mass is a straight line.
Statement (II): A plot of ν (ν = frequency of X-rays emitted) vs atomic number is a straight line.
Anonymous Quiz
8%
statement 1 is true only
33%
both statements are true
17%
both statements are false
42%
only statement 1 is false
Stybits : STUDY BETTER
Q3
Statement 1 : Periodic law revealed important analogies among the 94 naturally occurring elements [ Np & Pu like Actinium & proactinium are also found in pitch blende –an ore of uranium)
statement 2 : It stimulated interest in Inorganic Chemistry
Statement 1 : Periodic law revealed important analogies among the 94 naturally occurring elements [ Np & Pu like Actinium & proactinium are also found in pitch blende –an ore of uranium)
statement 2 : It stimulated interest in Inorganic Chemistry
FROM NCERT LINE [ jo students ncert skip krte hai unhh ke liye piyar se😂bnya ques]
Q7. Match the LIST-I with LIST-II
[ JEE MAINS 2025 ]
[ JEE MAINS 2025 ]
Anonymous Quiz
9%
A-IV, B-I, C-II, D-III
55%
A-IV, B-III, C-I, D-II
36%
A-II, B-III, C-IV, D-I
0%
A-III, B-I, C-IV, D-II
❤3
Q8. If IUPAC name of an element is “Unununnium” then the element belongs to nth group of periodic table. The value of n is______
[ similar to JEE 2024 ]
[ similar to JEE 2024 ]
Anonymous Quiz
33%
I B
50%
II B
17%
II A
0%
I A
❤2