3 form resin

Bakelite is made from phenol and formaldehyde in the presence of a base catalyst. It involves formation of methylene bridges at the ortho and para positions. The reaction starts with the initial formation of ortho and/or para-hydroxymethyl phenol derivatives which further react with phenol to ..

. It is the hardest natural substance known. It has high relative density (about 3.5). It is transparent and has high refractive index (2.45). It is non-conductor of heat and electricity. It burns in air at 900C to give CO 2 . It occurs as octahedral crystals. It is insoluble in all solve..

Identify the 3-dimensional figure that can be formed by the net. => cone or triangular pyramid or cube or triangular prism..

Which one expresses 0.3 in fractional form? => 3 10 or 7 10 or 1 3 or 1 10..

Choose the expanded form for the number. => 3 + 40 or 30 + 4 or 30 + 40 or 3 + 4..

Which of the nets can be folded to form a cylinder? => Figure 3 or Figure 4 or Figure 1 or Figure 2..

Which of the nets can be folded to form a cone? => Figure 4 or Figure 2 or Figure 3 or Figure 1..

Which of the nets would form a cube? => Figure 3 or Figure 2 or Figure 1 or Figure 4..

Which of the nets can be folded to form a cylinder? => Figure 2 or Figure 4 or Figure 3 or Figure 1..

Which of the nets can be folded to form a cylinder? => Figure 2 or Figure 3 or Figure 4 or Figure 1..