Viraf J Dalal Chemistry Class 10 Solutions. We covered all the Viraf J Dalal Chemistry Class 10 Solutions in this post for free so that you can practice well for the exam.
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Viraf J Dalal Chemistry Class 10 Objective Solutions for Students
If cold barium chloride is mixed with H₂SO4 which of the following is formed?
(A) HNO₂ + BaSO4
(B) HNO3 + BaSO4
(C) BaSO4 + NO2
(D) BaSO4 + N₂O3
Option a – HNO₂ + BaSO4
The compound of sulphur that can be refrigerant is
(A) SO2
(B) SO3
(C) S₂Cl₂
(D) H₂SO4
Option a – SO2
The bond angles of the SF4 molecule are
(A) 102°, 173°
(B) 89°, 117°
(C) 120°, 180°
(D) 45°, 118°
Option a – 102°, 173°
The oxide which acts as a reducing, oxidising, bleaching agent and Lewis base is
(A) SO3
(B) SO2
(C) MnO₂
(D) CO2
Option b – SO2
Sulphur reacts with chlorine in 1 : 2 ratio and forms X. Hydrolysis of X gives a sulphur compound Y. What is the structure and hybridization of the anion of Y?
(A) Tetrahedral, sp³
(B) Linear, sp
(C) Pyramidal, sp³
(D) Trigonal planar, sp²
Option c – Pyramidal, sp³
Passing H₂S gas through nitric acid produces
(A) Rhombic sulphur
(B) Colloidal sulphur
(C) Amorphous sulphur
(D) Plastic sulphur
Option b – Colloidal sulphur
Fluorine, chlorine, bromine, iodine and astatine are members of group…… P… and are known as ..Q……… Here P and Q refer to ……..
(A) P-17, Q-halogens
(B) P-17, Q-halogens
(C) P-16, Q-halogens
(D) P-16, Q-halogens
Option b – P-17, Q-halogens
Fluorine and chlorine are ….P….., bromine is a …. Q and iodine is a ….R…… Here P, Q and R refer to
(A) P-solids, Q-liquid, R-gas
(B) P-solids, Q-gas, R-liquid
(C) P-gases, Q-solid, R-liquid
(D) P-gases, Q-liquid, R-solid
Option d – P-gases, Q-liquid, R-solid
Which of the following is used to absorb sulphur dioxide?
(A) Conc. H₂SO4
(B) KOH solution
(C) Water
(D) Anhydrous CaCl₂
Option b – KOH solution
The crystalline form of the sulphur stable at room temperature is
(A) Rhombic sulphur
(B) Monoclinic sulphur
(C) Plastic sulphur
(D) Primatic sulphur
Option a – Rhombic sulphur
Decreasing order of B.P. is
(A) H₂O > H₂S > H₂Se > H₂Te
(B) H₂O > H₂Te > H₂Se > H₂S
(C) H₂O > H₂Se > H₂Te > H₂S
(D) H₂O > H₂S > H₂Te > H₂Se
Option b – H₂O > H₂Te > H₂Se > H₂S
The angular shape of the ozone molecule (O3) consists of
(A) 1 sigma bond 1 pi bond
(B) 2 sigma bond 1 pi bond.
(C) 1 sigma bond 2 pi bond
(D) 2 sigma bond 2 pi bond
Option b – 2 sigma bond 1 pi bond
Photo-conductors of Xerox machine uses
(A) Mercury
(B) Black phosphorus
(C) Selenium
(D) Tellurium
Option c – Selenium
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