You and your group mates are studying a stone in the laboratory. Your group wrote the following observations.I. It is a shiny stone.II. Its mass is 0.25 kg.III. It is generally brown but has patches of black circles.IV. It can be used to crack calcite rocks.Which of the following is correct about these observations?a.II is quantitative while IV is a qualitative observation.b.II is a qualitative observation.c.III and IV are both quantitative observations.d.I is a quantitative observation.

You and your group mates are studying a large flower in the laboratory. Your group wrote the following observations.I. It has eleven petals.II. The petals alternate from color yellow to orange.III. The flower attracts mosquitoesIV. The mass of the flower is 0.1 kg.Which of the following is correct about these observations?a.I is quantitative while III is a qualitative observation.b.II and III are quantitative observations.c.IV is quantitative while I is a qualitative observation.d.I and II are qualitative observations.

Some students were studying different minerals. Which of the following will NOT help them identify an unknown mineral?Select one:the shape of its crystalshighlight_offthe mass of the mineral samplehighlight_offthe hardness of the mineralhighlight_offthe streak color made by the mineralhighlight_off

Which of the following is TRUE about quantitative observations?a.They can be made by smelling or touching an object.b.They always require measuring tools to have an observation.c.They always have units of measurement.d.They are represented by numbers.

when a student adds excess dilute sulfuric acid to a sample of solid copper carbonate in a test-tube, the three observations made will be

1.Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g. On the basis of given data, mark the correct option out of the following statements. Student Readings (i)  A 3.01 2.99 (ii)B 3.05 2.951 point(i) Results of both the students are neither accurate nor precise.(ii) Results of student A are both precise and accurate.(iii) Results of student B are neither precise nor accurate.(iv) Results of student B are both precise and accurate.