Question Answers

In which case, the order of acidic strength is not correct (a) HI > HBr > HCl (b) HIO4 > HBrO4 > HClO4 In which case the order of acidic strength is not correct (a) HI > HBr > HCl (b) HIO4 > HBrO4 > HClO4 November 25, 2020 Category: Uncategorised (JEE Advanced Physics by [...]

Which reaction is not valid (a) HCl + F2 to HF + Cl2 (b) HF + Cl2 to F2 + HCl Which reaction is not valid (a) HCl + F2 to HF + Cl2 (b) HF + Cl2 to F2 + HCl November 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]

Prove the following (sin α + cos α) (tan α + cot α) = sec α + cosec α Prove the following (sin α + cos α) (tan α + cot α) = sec α + cosec α November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

The correct order of pseudohalide, polyhalide and interhalogen are (a) BrI2-, OCN-, IF5 (b) IF5, BrI2-, OCN- BrI2- IF5 (b) IF5 OCN- polyhalide and interhalogen are (a) BrI2- The correct order of pseudohalide November 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Prove the following If tanA = 3/4 , then sinA cosA = 12/25 . Prove the following If tanA = 3/4 then sinA cosA = 12/25 . November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

Prove the following tan A/ 1+sec A – tan A/ 1-sec A = 2 cosec A Prove the following tan A/ 1+sec A - tan A/ 1-sec A = 2 cosec A November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

Prove the following sin θ/ 1 + cos θ + 1 + cos θ /sin θ = 2 cosec θ Prove the following sin θ/ 1 + cos θ + 1 + cos θ /sin θ = 2 cosec θ November 25, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class [...]

The reaction of the type 2X2 + S to SX4 is shown by sulphur when X is (a) Fluorine or Chlorine (b) Chlorine only The reaction of the type 2X2 + S to SX4 is shown by sulphur when X is (a) Fluorine or Chlorine (b) Chlorine only November 25, 2020 Category: Uncategorised (JEE Advanced [...]

Write ‘True’ or ‘False’ and justify your answer in each of the following: If the height of a tower and the distance of the point of observation from its foot, both, are increased by 10%, then the angle of elevation of its top remains unchanged. are increased by 10% both then the angle of elevation [...]

Write ‘True’ or ‘False’ and justify your answer in each of the following: The angle of elevation of the top of a tower is 30°. If the height of the tower is doubled, then the angle of elevation of its top will also be doubled. then the angle of elevation of its top will also [...]