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Which of the following statement is/are true? I. Some metals react with water to produce metal hydroxides and hydrogen gas II. Generally, nonmetals do not react with water 
The following question has two premises and two conclusions. If the premises re assumed to be true (irrespective of factuality), then, in respect of each of the items given below, which of the following conclusions follow logically? Premises: All metals are grey in colour. Some metals are heavy. Conclusion: I. All heavy metals are grey in colour. II. All light metals are not grey in colour.
You are given three metals 'X', 'Y' and 'Z'. Metal 'X' is found to react with an aqueous solution of both YSO4 and ZSO4 whereas metal 'Z' is found to react only with aqueous solution of YSO4. Based on these observations, select the correct statement from the following.
Consider the following statements: 1. The relative humidity of air does not change with temperature as long as specific humidity remains constant. 2. Dew-point temperature is the temperature at which condensation begins when air is cooled at constant volume. 3. Saturated air passing over a water surface does not cause change of air temperature. 4. For saturated air, dry-bulb, wet-bulb and dew-point temperatures are identical. Which of the above statements are correct?
From the list of metals furnished here under, the number of metals which can react with both acids and bases is a) Aluminium b) Zinc c) Beryllium d) Iron e) Calcium
In MPFI-Air Induction System, the air cleaner, the air flow meter, the throttle body and the air valve supply a proper amount of air to the air intake chamber and intake manifold.
Suppose saturated polar air has an air temperature and dew point of -10o C, and unsaturated desert air has an air temperature of 35o C and a dew point of 10o C. The desert air contains ______ water vapour and has a ________ relative humidity than the polar air.
Which of the following are the reactions in which molecules absorbing light do not themselves react but induce other molecules to react?
P, Q, R, S, T and U are six persons who have different mobiles - Nokia, Vivo, Oppo, Samsung, Apple and Jio (but not necessarily in the same order). P does not have Apple mobile. U does not have Oppo nor Vivo mobile. T has a Nokia mobile. R does not have Oppo nor Apple mobile. Q does not have Samsung nor Oppo mobile. P does not have Oppo nor Jio mobile. U does not have Jio nor Apple mobile. Which of the following combinations is correct?
In _____ reactions, molecules absorbing light do not themselves react but induce other molecules to react.