DSSSB TGT c9daltonatom — practice questions
12 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice DSSSB TGT c9daltonatom in the app →Per NCERT Class 9 Science Ch 9, who proposed the ATOMIC THEORY in the early 19th century — providing the firstPer NCERT, which of these is a POSTULATE of Dalton's atomic theory?Per NCERT, what does Dalton's theory say about atoms of the SAME element?Per NCERT, what does Dalton's theory say about atoms of DIFFERENT elements?Per NCERT, what does Dalton's theory say about chemical reactions at the atomic level?Per NCERT, what is a MOLECULE — formally defined?Per NCERT, why does HELIUM exist as single ATOMS rather than as molecules?Per NCERT, what is the OCTET RULE for atomic stability?Per NCERT, how do atoms achieve a stable electronic configuration?Per NCERT, what is a CHEMICAL BOND?Per NCERT, what is the relationship between Dalton's atomic theory and Lavoisier's LAW OF CONSERVATION OF MASSPer NCERT, what does Dalton's theory say about the COMBINING ratios of atoms in a compound?