(d) We use valency of the element to determine the molecular formula of a compound. The valencies are crossed to obtain the formula. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(d) We use valency of the element to determine the molecular formula of a compound. The valencies are crossed to obtain the formula.
Middle lamella is formed of
(a) Middle lamella is made up of calcium pectate. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
(a) Middle lamella is made up of calcium pectate.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
See lessChromosomes are made up of
(d) Chromosomes are made up of DNA and proteins. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
(d) Chromosomes are made up of DNA and proteins.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-5/
See lessChoose the incorrect statement:
(d) Rutherford model only established that the nucleus is positively charged. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/
(d) Rutherford model only established that the nucleus is positively charged.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/
See lessThe chemical formula of a molecular compound is determined by
(d) We use valency of the element to determine the molecular formula of a compound. The valencies are crossed to obtain the formula. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
(d) We use valency of the element to determine the molecular formula of a compound. The valencies are crossed to obtain the formula.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-3/
See lessThe number of neutrons in sodium and magnesium is
(a) Sodium and magnesium both contain 12 neutrons each. https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/
(a) Sodium and magnesium both contain 12 neutrons each.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/
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