Science Epic

How many of the given statement are true ? 1. If (d²v/dt²) < 0 for some t€ (intial , final) then velocity will can increase 2. If (d|s|/dt) >0 then we can depict displacement time graph from distance time graph without Knowledge of derivative sign at definition changing points . 3. Area under a-x graph gives change in kinetic energy per unit mass of the body 4. At the two minimum point of trajectory of a projectile the two velocity vectors for the Projectiles are perpendicular.

Here is A polar bear thinking skill question on teddy day XD With the available digits 0,1,2,5,7,9 find number of 6-digit numbers which are divisible by 11 ..

Here is the solution :)

Here comes a chocolate day special chocolaty question xD Reaction of 2-chloro-ethanoic acid with AgNo2 AT 300 °c gives

Try it ITS VIBRATIONAL BOND FREQUENCY ORDER ASKED :)

Is questions ka internet pe bhi ya to no solution he ya phir wrong solution diya hua he they have basically forgotten to put Coefficients So it a must to do questions for your practice

Kya koi isse try krna chahega 🙂

Perchlorate solubility of Lithium > Sodium > Potassium> Rubidium > Cesium . Which of the following factors dominates the above order : - 1. Hydration energy per chlorate decreases down the group 2. Lattice energy decrease down the group 3. Size of cation is increases down the group 4 . Polarisation ability of cation decreases down the group

So the solution is ALF3 IS IONIC AND ALC3 POSSES COVALENT POLYMERIZATION THATS WHY ALF3> ALCl3 BUT NOT ALL COVALENT SOLIDS POSSES LOW MELTING POINT THAN ALF3 ACTUALLY 3D COVALENT SOLIDS POSSES MORE MP THAN IONIC SOLIDS Now the question says that if AlCL3 IS POLYMER SOLID THEN IT WOULD HAVE BEEN MORE MP BUT ITS A 2D NETWORK SOLID(BRIDGE BONDED) WITH MINIMAL THICK THATS WHY IT HAS LOW MP  THAN ALF3 ONLY 3D COVALENT SOLIDS HAVE MORE MP THAN IONIC (GENERALLY) And due to Sterric hinderence ALBR3 ONLY UNDERGOES DIMERISATION(BRIDGE BONDED) EVEN IN SOLID STATE THATS WHY IT HAS LESS MP THAN ALCL3 For More such interesting concept and question stay connected @sciencepic

Despite of Alluminium trichloride exist in polymeric form and Vanderwalll radius of AlBr3 is larger among fluoride chloride and bromide Melting point of Alf3> AlCl3 > AlBr3 This is BECAUSE :- 1.AlF3 HAS LOWEST SHELL-SHELL INTERACTION 3P-2P.. 2.AlBR3 EXIST IN DIMER AND AlCL3 EXIST IN POLYMERIC FORM.. 3.AlCL3 POSSES LATTICE ON MILD THICKNESS.. 4.AlF3 posses ionic lattice and covalent solids always posses low melting point than ionic Out of the given four statements which of the statements are ture for the fact

Good Question Touched a lot number of topics

A very very best wishes for ALL OF THEM WHO ARE HAVING Exam tomorrow 💫 Ek final advice sare questions me pen jarur uthana even if it is very simple take atleast 30 seconds to solve aur phle 45 /- BENCHMARK TK PAHUCHNA ... ALL THE VERY BEST ❤️