NEB Class 11 Atoms — practice questions
22 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEB Class 11 Atoms in the app →The English schoolteacher whose atomic theory revolutionised chemistry was John:The rule that a pure compound always holds the same elements in the same proportion by mass is the law of:The rule about two elements forming more than one compound is the law of:A reaction that ends with fewer atoms than it started violates Dalton's postulate that atoms are neither creatThe scientist who produced a visible beam in a cathode ray tube was:The oil drop experiments measuring the charge on an electron were performed by:Those experiments showed the charge on a droplet was always a multiple of one fundamental:Because subatomic particles were found, the atom turned out not to be:Thomson's early model, with electrons embedded in positive matter, is likened to:The physicist who fired alpha particles at gold foil was:In that experiment, what most of the alpha particles did was pass through the foil:That result showed most of the inside of an atom is essentially:The small, heavy, positively charged body at the centre of an atom is the:Most of an atom's mass is concentrated in the:The remaining nuclear mass beyond the protons was explained by neutral particles called:The number of protons in the nucleus of an atom is its atomic:Any atom containing six protons must be the element:An atom is electrically neutral when its protons equal its:An atom carrying an electrical charge because those numbers differ is called an:An atom that gains one or more electrons becomes an:An atom that loses one or more electrons becomes a:Natural abundances of isotopes are measured with an instrument called a mass: