Question

Algae are autotrophs because they
(A) carry out anaerobic respiration
(B) feed on dead organisms
(C) can manufacture their own food
(D) feed on other living organisms

Which of these is the correct sequence of steps to develop a new plant variety?
(P) Evaluation
(Q) Multiplication of improved seeds
(R) Selection
(S) Distribution of improved seeds
(T) Development of gene variation
(A) T, R,P,Q,S
(B) R,T,P,Q,S
(C) S,Q,P,R,T
(D) P, Q, R, T, S

A certain sum of money amounts to 1125 in 5 years and to 1200 in 8 years. Find the sum.
(A) * 900
(B) *500
(C) *1000
(D) *800

Three numbers are such that the second is twice the first and the third is thrice the first. If their sum is 12.
What is the value of the largest pamber?
(A) 4
(B) 2
(C) 6
(D) 8​

Answer 1

1) c

2) b

3) 1000 , yearly interest is 25

4) c

Answer 2

Algae are autotrophs because they

(A) carry out anaerobic respiration

(B) feed on dead organisms

(C) can manufacture their own food☑️☑️☑️

(D) feed on other living organisms

Which of these is the correct sequence of steps to develop a new plant variety?

(P) Evaluation

(Q) Multiplication of improved seeds

(R) Selection

(S) Distribution of improved seeds

(T) Development of gene variation

(A) T, R,P,Q,S

(B) R,T,P,Q,S☑️☑️☑️

(C) S,Q,P,R,T

(D) P, Q, R, T, S

A certain sum of money amounts to 1125 in 5 years and to 1200 in 8 years. Find the sum.

(A) * 900

(B) *500

(C) *1000☑️☑️☑️

(D) *800

Solution :- in 3 years increased amount = 1200-1125 = 75

so, every year it was increased = 25

in first 5 year it was increased = 25*5 = 125

so, principal = 1125-125 = 1000

Three numbers are such that the second is twice the first and the third is thrice the first. If their sum is 12.

What is the value of the largest pamber?

(A) 4

(B) 2

(C) 6☑️☑️☑️

(D) 8

solution :-

Required ratio of 3 numbers = 1:2:3

now,

6------12

3------6 (Ans)