Which of the following reagents is used to test for starch?
Million’s reagent
Fehling’s solution
Sudan III
Iodine solution
Benedict’s solution
Correct answer is D
No explanation has been provided for this answer.
The half-life of a radioactive element is 5 Calculate its decay constant
0.113s-1
0.436 s-1
0.139 s-1
0.193 s-1.
Correct answer is C
No explanation has been provided for this answer.
Which of the following is a nitrifying bacterium
Nitrobacter
Rhizobium
Azotobacter
Clostridium
Nitrosomonas
Correct answer is A
No explanation has been provided for this answer.
Two chords PQ and RS of a circle when produced meet at K. If ∠KPS = 31o and ∠PKR = 42o, find ∠KQR
11o
73o
107o
138o
149o
Correct answer is C
No explanation has been provided for this answer.
Thunderstorm can be beneficial to plants because it
kills the pests that attacks crops
destroys some of the major crops
adds nitrates to the soil
adds lime to the soil
makes rain water available to plants
Correct answer is C
No explanation has been provided for this answer.