BMAT 2009 Section 2 Question 18
The equation for the preparation of nitrogen monoxide is:a Cu + b HNO3 ------- a Cu (NO3)2 + c H2O + 2NOWhat is the value of b? Answer: 18) D…
The equation for the preparation of nitrogen monoxide is:a Cu + b HNO3 ------- a Cu (NO3)2 + c H2O + 2NOWhat is the value of b? Answer: 18) D…
The three statements below are about exhaling.1 The ribs swing down and inwards during exhaling.2 The diaphragm muscles contract during exhaling.3 The pressure in the lungs increases during exhaling.Which statements…
Which of the four statements below about natural selection are correct?1 Competition occurs between individuals of the same species.2 Competition occurs between individuals of different species.3 Selection can lead to…
The equation connects the variables A, x, y, z, P and Q The following changes are made:x and y are both increased by 50 %z is decreased by 20 %P…
Evaluate: Answer: 16) F Let us break down such a complicated problem into smaller parts. (2 x 10³) = 2000(8 x 10²) = 800 So, (2 x 10³) + (8…
A detector of radioactivity shows background radiation to be 20 counts per minute with no radioactive sources nearby. A radioactive source which emits alpha particles and beta particles is brought…
The graph represents the motion of a vehicle during part of a journey. What is the best estimate of the distance travelled during the part of the journey shown? Answer:…
Element x is in the second period of the Periodic Table. An atom of element y has six moreprotons than an atom of element x. Which statement must be correct?…
The order of reactivity of four elements is J>M>Q>T i.e. J is the most reactive and T the leastreactive. A series of reactions are given below: Which three reactions could…
Which one of the following movements will be severely and immediately disrupted if the oxygenconcentration in the blood becomes very low? Answer: 13) B The key to solve this question…