Himachal Pradesh HPTET N-2513 - Free Online Practice Test

141. Lightest metal floating on water A. Na B. Sc C. Li D. Ca

142. Gases show which property due to high speed & large spacing? A. Scattering B. Diffusion C. Rigidity D. Condensation

143. Rutherford alpha scattering discovered A. Atomic nucleus B. Electron C. Proton D. Neutron

144. Radioactive isotope of hydrogen A. Protium B. Deuterium C. Tritium D. None

145. Test to differentiate 1°, 2°, 3° amines A. Lucas test B. Tollen’s test C. Hinsberg test D. Ferric chloride test

146. Auto-reduction process NOT used for which metal? A. Mercury B. Copper C. Lead D. Iron

147. IUPAC name of m-Cresol A. 3-Methylphenol B. 3-Chlorophenol C. 3-Methoxyphenol D. Benzene-1,3-diol

148. Test to distinguish acetaldehyde & acetone A. FeCl₃ B. NaHCO₃ C. Tollen’s test D. Molisch test

149. Species initiating nitration of benzene A. NO₂ B. NO⁺ C. NO₂⁺ D. NO₂⁻

150. Element with atomic no. 57 belongs to A. s-block B. p-block C. d-block D. f-block