Bissoy.com
Doctors Medicines MCQs Q&A

Zinc metal is often used to reduce substances in aqueous solutions. If zinc metal is not available, which of the following would be a reasonable and safe substitute for zinc?

Zinc metal is often used to reduce substances in aqueous solutions. If zinc metal is not available, which of the following would be a reasonable and safe substitute for zinc? Correct Answer Cd

(D) Sulfur and fluorine commonly gain electrons and cause other substances to be oxidized. Cadmium and sodium lose electrons and cause other substances to be reduced. Cadmium is less hazardous and will be preferred in this case.

Related Questions

Which of the following solutions will conduct electricity? (i) Aqueous solution of glucose (ii) Aqueous solution of acetone (iii) Aqueous solution of acetic acid (iv) Aqueous solution of milk of magnesia
1. A Judicial Magistrate First Class can authorize the detention in custody, of a person accused of an offence triable by Special Court established under The Narcotic Drugs and Psychotropic Substances Act, 1985, for a period not exceeding fifteen years.
2. The Special Court established under The Narcotic Drugs and Psychotropic Substances Act, 1985, cannot exercise the power to authorize the detention of accused in custody, as enunciated under Section 167 of Code of Criminal Procedure.
3. The definition of 'use' under Section 2(xxviii-a) of The Narcotic Drugs and Psychotropic Substances Act, 1985, excludes personal consumption of narcotic drugs and psychotropic substances.
4. The High Court, by special order, may constitute as many Special Courts under The Narcotic Drugs and Psychotropic Substances Act, 1985, as necessary.
Which of the above statements are correct?
If a 1 kg of metal having 25% of zinc and rest is copper is mixed with 5 kg of metal having 40% zinc and rest is other ‘P' metal. What is the ratio of three elements(Zinc, Copper & 'P' metal) in the resulting mixture?
Consider the following aspects of substances involved in a chemical reaction: A. Physical state of all the substances  B. Number of molecules of all substances  C. Number of atoms of each substance D. Sum of masses of all atoms of substances  Which of the above remain the same before and after a chemical reaction has taken place? 
Which of the following statements are true regarding diamagnetic substances? (i) Diamagnetic substances are feebly repelled by magnets (ii) Diamagnetic substances move from stronger field side to weaker field side (iii) Permeability of diamagnetic substances is greater than one. (µ > 1)
Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the right order to form a meaningful and coherent paragraph. P. The newly discovered substances emitting radiations were called radioactive substances. Q. This property of emitting radiations spontaneously by these substances was named radioactivity. R. Since then many radioactive substances have been discovered. S. Some occur naturally while others are produced artificially.
Sentences of a paragraph are given below in jumbled order. Arrange the sentences in the right order to form a meaningful and coherent paragraph. A. This whole process of breakdown of complex components of food into simpler substances is called digestion B. These complex substances cannot be utilized as such.  C. The components of food such as carbohydrates are complex substances. D. So they are broken down into simpler substances.
An aqueous solution with chlorine 30 g/L and an organic compound with no chlorine at the rate 50 L/min were put into an extraction machine and produced aqueous solution with chlorine 5 g/L and organic compound with chlorine 10 g/L, what is the rate of aqueous solution?
Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.
Dyslexia is a perceptual disorder often occurring in persons of normal, or even above average intelligence. The reader is unable to perceive correctly what is on a page. Letters and numbers often appear reversed: "b" seems to be "d","quite" is "quiet" and "from" is "form". The reader tends to leave out letters or words or insert words or letters that are not there. Vowel and consonant sounds may be confused. Many dyslexics are left­handed or able to write with either hand. They often confuse left and right. Learning to speak may also be delayed beyond infancy. The condition seems to be inherited. It may persist into adulthood. However, with early recognition and specialized approaches to teaching reading, most dyslexics can learn to read. Some researchers believe that latent dyslexia may be aggravated by the way reading is taught. The modern whole­word, or look­and­say, method seems to be more of a hindrance to learning for dyslexics than it is for ordinary pupils. The phonetic method of teaching students to learn letters and sound them out appears to achieve better reading results. The problem of words that cannot be sounded out ­ such as rough, laugh or through ­ is not solved by phonetics. These words must simply be memorized. However, for children with dyslexia the problem can be compounded by the failure of parents or teachers to recognize the condition. This can easily lead to emotional problems for dyslexic children, who cannot understand their failure to keep up with their classmates.
In Dyslexia, letters and figures often appear __________
Which of the following statement/s is/are correct in context of Nachiket Mor Committee?
1. Universal Electronic Bank Account
2. Ubiquitous Access to Payment Services and Deposit Products at Reasonable Charges
3. Sufficient Access to Affordable Formal Credit
4. Universal Access to a Range of Deposit and Investment Products at Reasonable Charges
5. Universal Access to a Range of Insurance and Risk Management Products at Reasonable Charges
6. Right to Suitability