Acidic Nature vs Percentage S Characters

Q. An alkene on heating with hot acidified KMNO4 gives succinic acid. The alkene is:

Q.

In polyatomic molecules the term mean or average bond enthalpy is used. It is calculated by dividing the total bond dissociation enthalpy by?

1. Number of moles of reactants

2. Total number of atoms

3. Number of bonds broken

4. Number of carbon atoms

Q. For hybridisation, we usually use the formula = no.of B.P +No. of L.P. but why then did we use a different formula while calculating hybd. of halides of group 16 . How to decide which formula to use ?? hybd =1/2(no of Valence e + no.of monovalent bonds)

Q. 67.In Propanone [ CH3 - CO -CH3] Oxygen atom has 2 lone pairs and 2 bond pairs then why is the hybridization sp2??

Q.

Which of the following is correct order with respect to acidic nature

1. 

2. 

3. 

4. 

Q. Hypervalent species among following 1 BF3 2 CO2 3 SiF4 4 XeF6 Ratio of sigma and pi bond in tetracyanoethylene 1 2:1 2 1:1 3 1:2 4 3:4

Q. Which of the following reaction will not be favourable in the forward direction?

1. $C{H}_{3}ONa+C{H}_{3}COOH\to C{H}_{3}OH+C{H}_{3}COONa$
2. $PhONa+N{H}_3\to PhOH+NaN{H}_2$
3. $HC\equiv CH+NaN{H}_2\to HC\equiv CNa+N{H}_3$
4. $HCOOH+PhONa\to HCOONa+PhOH$

Q. Which of the following are lewis acid BF3, H+, NH4+?

Q.

In the following question two Statement-I (Assertion) and Statement-2 (Reason) are provided. each question has 4 choices (a), (b), (c) and (d) for its answer, out of which Only One is correct. Mark your responses from the following options:
Statement-1: 2-Pentyne on hydrogenation in presence of Lindlar catalyst gives cis-1-pentene.
Statement-2: Addition of hydrogen is a stereospecific reaction.

1. Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanation of Statement-1.
   

2. Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.
   
   

3. Statement-1 is true but Statement-2 is false.
   

4. Statement-1 is false but Statement-2 is true.

Q.

Potassiumcarbonate cannot be prepared by Solvay process. Why?

Q. What happens when silica is treated with NaOH?

Q. Q8. (i) HC = C - HC = CH - CH₃​, what type of hybridisation is present on the carbon atoms in the compound.