A Admin • 832.27K Points Coach Q. Which of the following compounds is called gypsum? (A) CaSO₄·2H₂O (B) CaCO₃ (C) CaO (D) Ca(OH)₂
A Admin • 832.27K Points Coach Q. Which of the following is an example of a buffer solution? (A) HCl + H₂O (B) NaOH + H₂O (C) CH₃COOH + CH₃COONa (D) NaCl + H₂O
A Admin • 832.27K Points Coach Q. The catalyst used in hydrogenation of vegetable oils is: (A) Iron (B) Copper (C) Nickel (D) Platinum
A Admin • 832.27K Points Coach Q. Which of the following is an intensive property? (A) Mass (B) Volume (C) Density (D) Number of moles
A Admin • 832.27K Points Coach Q. The functional group present in aldehydes is: (A) -OH (B) -COOH (C) -CHO (D) -CO-
A Admin • 832.27K Points Coach Q. Which of the following is an ore of aluminium? (A) Haematite (B) Bauxite (C) Galena (D) Zinc blende
A Admin • 832.27K Points Coach Q. The shape of NH₄⁺ ion is: (A) Bent (B) Trigonal pyramidal (C) Tetrahedral (D) Square planar
A Admin • 832.27K Points Coach Q. Which of the following is a condensation polymer? (A) Polythene (B) PVC (C) Nylon-6,6 (D) Polypropylene
A Admin • 832.27K Points Coach Q. The oxidation state of chromium in Cr₂O₇²⁻ is: (A) +3 (B) +4 (C) +6 (D) +7
A Admin • 832.27K Points Coach Q. Which of the following is used in vulcanization of rubber? (A) Phosphorus (B) Sulfur (C) Chlorine (D) Nitrogen