Name the following compounds PC3PC3 and SO2502.
ns:
Answers
Answer:
The rule that gives the number of matchsticks required to make the following pattern
containing n hexagons is :
………….
(1) 5n (2) 6n (3) 5n+1 (4) 6n+1
2. If each match box contains 50 matchsticks, the number of matchsticks required to fill n such
boxes is :
(1) 50 + n (2) 50n (3) 50 ÷ n (4) 50 – n
3. If 3a and 2b denote the length and breadth of a rectangle, then its perimeter is :
(1) 3a+2b (2) a+b (3) 2(a+b) (4) 6a+4b
4. The property of numbers which says 3
42 is equal to 3 x 40 + 3 x 2 is known as :
(1) commutative (2) associative (3) distributive (4) None of these
5. Is (ab)c = a(bc) ?
(1) Yes. (2) No.
(3) Cannot be determined. (4) None of them.
6. –3xy, 7xy, –yx are
(1) binomials (2) trinomials (3) like terms (4) unlike terms.
7. Terms in an expression which have the same literal factors are called
(1) unlike terms (2) like terms (3) odd terms (4) even terms
8. The coefficient of xy2
z in –4xy2
z is
(1) 4 (2) 4x (3) –4 (4) –4x
9. The coefficient of ba2
in 16a2
bc is :
(1) 16a
2
(2) 16b (3) 16c (4) 16.
10. An algebraic expression of two distinct terms is known as
(1) monomial. (2) binomial. (3) trinomial. (4) quadrino