PART - 3 CH - 9 Light-Reflection and Eefraction — Science STD 10 — Question

According to modern periodic table, the properties of elements are the periodic functions of their…………….(atomic number, atomic mass number

......... is used in the preparation of tincture iodine. (Ethanol, methanol, propanon)

Radius of curvature of a spherical mirror is always _______ its focal length.(half of, three times, twice)

When tall pea plant (TT) and short pea plant (tt) were hybridized, it produced all tall progeny because tallness is ________ trait. (Dominant, Recessive, Neutral)

The idea of evolution of species by natural selection was given by ……….. (Robert brost, Charles Darwin, van duke)

The growth of a pea plant depends on the amount of specific ............... in the plant. (protein, hormones, nutrition)

The size of ________ is determined by the rates of birth and death.(Population, Ecosystem, Community)

The cells involved in sexual reproduction are known as .......... (sperms, ovaries, gametes/ germ cells)

The substance, used in cellular respiration, is _________.(Glucose, Oxygen, Carbon dioxide)

Litmus is a __________ indicator.(Natural, Synthetic, Olfactory)