Skip to content Home Questions Play Progress Daily Challenge Questions › Chemistry Questions QUESTION Which metalloid in the carbon group is chemically similar to its group neighbours tin and silicon? Open question → QUESTION Which of the following scientists grouped the elements into triads? Open question → QUESTION Which description matches Dalton’s historical symbol for phosphorus? Open question → QUESTION The tendency of an atom or a functional group to attract a shared pair of electrons toward itself, is known as: Open question → QUESTION Which schematic, described by its group and period counts, matches the standard modern periodic table? Open question → QUESTION Consider the following statements about electron configuration and groups in the periodic table: 1. Elements of Group 2 have two electrons in their outermost… Open question → QUESTION According to Mendeleev's Periodic Table, which elements’ properties matched up remarkably well with eka-silicon? Open question → QUESTION In Newlands’ octaves, which listed element was found to have properties similar to lithium? Open question → QUESTION As per Mendeleev’s prediction, atomic mass of eka-aluminium was: Open question → QUESTION To which group do the alkaline earth metals such as radium, barium and strontium belong? Open question → QUESTION 'Au' is the symbol for which of the following elements? Open question → QUESTION In which musical note did Newland put the metals Co and Ni with halogens? Open question → QUESTION Moseley observed that a plot of √ν against atomic number Z gave an approximately straight line for a characteristic spectral series. What does ν… Open question → QUESTION According to Newland’s Law of Octaves, every eighth element has properties similar to those of the first element. Which of the following elements has… Open question → QUESTION Consider the following statements about periodic properties of elements: 1. First ionisation energy generally decreases as the atomic radius increases within a group. 2.… Open question → QUESTION For the common halogens fluorine, chlorine, bromine and iodine, identify the INCORRECT statement about their periodic-table group. Open question → QUESTION Which listed substance is monatomic under ordinary conditions? Open question → QUESTION In the context of periodicity, a unit called picometre is used to measure the _____. Open question → QUESTION Consider the following statements about elements in the periodic table: 1. Silicon is a metalloid with both metallic and non-metallic properties. 2. Iron and… Open question → QUESTION During alcoholic fermentation by yeast, pyruvate is converted into which listed end products? Open question → QUESTION How many carbon atoms are present in a pyruvate ion? Open question → QUESTION Which of the following is NOT an allotrope of carbon? Open question → QUESTION Identify the correct statement with respect to unsaturated hydrocarbons. Open question → QUESTION Consider the following statements regarding hydrides used in organic chemistry: 1. Calcium hydride is commonly used as a drying agent and can act as… Open question → Home Questions Play Progress 